PUMA publications for /user/renerehwagenhttps://puma.ub.uni-stuttgart.de/user/renerehwagenPUMA RSS feed for /user/renerehwagen2024-03-28T13:58:00+01:00Semiconductor Quantum Dots for Integrated Quantum Photonicshttps://puma.ub.uni-stuttgart.de/bibtex/2989325ac14e747ab0150c2fb55853523/renerehwagenrenerehwagen2022-05-25T10:50:30+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="S Hepp" itemprop="url" href="/person/145e5c65db65aacf0804d06dfee81f0bc/author/0"><span itemprop="name">S. Hepp</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M Jetter" itemprop="url" href="/person/145e5c65db65aacf0804d06dfee81f0bc/author/1"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="S.L. Portalupi" itemprop="url" href="/person/145e5c65db65aacf0804d06dfee81f0bc/author/2"><span itemprop="name">S. Portalupi</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="P Michler" itemprop="url" href="/person/145e5c65db65aacf0804d06dfee81f0bc/author/3"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><em><span itemprop="publisher">Adv. Quantum Technol. 1900020</span>, </em>(<em><span>2019<meta content="2019" itemprop="datePublished"/></span></em>)</span>Wed May 25 10:50:30 CEST 2022Semiconductor Quantum Dots for Integrated Quantum Photonics2019ihfg InAs quantum dots grown on metamorphic buffers as non-classical light sources at telecom C-band: a reviewhttps://puma.ub.uni-stuttgart.de/bibtex/26c3c19ee059ee9121f8a51dc7acf58ee/renerehwagenrenerehwagen2022-05-25T10:48:55+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="S.L. Poertalupi" itemprop="url" href="/person/1d647b346f10fd9f400c754057dcb166f/author/0"><span itemprop="name">S. Poertalupi</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M Jetter" itemprop="url" href="/person/1d647b346f10fd9f400c754057dcb166f/author/1"><span itemprop="name">M. Jetter</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="P Michler" itemprop="url" href="/person/1d647b346f10fd9f400c754057dcb166f/author/2"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><em><span itemprop="publisher">Semicond. Sci. Technol. 34, 053001</span>, </em>(<em><span>2019<meta content="2019" itemprop="datePublished"/></span></em>)</span>Wed May 25 10:48:55 CEST 2022InAs quantum dots grown on metamorphic buffers as non-classical light sources at telecom C-band: a review2019ihfg Mode-locked AlGaInP VECSEL for the red and UV spectral rangehttps://puma.ub.uni-stuttgart.de/bibtex/2fccfd0e7d10010daee98e7043e7865f6/renerehwagenrenerehwagen2022-05-25T10:34:12+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="E Bek" itemprop="url" href="/person/18611502164c85f353126b2305e8300e2/author/0"><span itemprop="name">E. Bek</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M Jetter" itemprop="url" href="/person/18611502164c85f353126b2305e8300e2/author/1"><span itemprop="name">M. Jetter</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="P Michler" itemprop="url" href="/person/18611502164c85f353126b2305e8300e2/author/2"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><em><span itemprop="publisher">Wiley-VCH, Weinheim, 305 – 320</span>, </em>(<em><span>2021<meta content="2021" itemprop="datePublished"/></span></em>)</span>Wed May 25 10:34:12 CEST 2022Mode-locked AlGaInP VECSEL for the red and UV spectral rangeIn Vertical External Cavity Surface Emitting Lasers – VECSEL Technology and Applications2021ihfg Optically pumped red-emitting AlGaInP-VECSELs and the MECSEL concepthttps://puma.ub.uni-stuttgart.de/bibtex/2423c3174e46a611c5549d7c44cd10c5e/renerehwagenrenerehwagen2022-05-25T10:31:02+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="H Kahle" itemprop="url" href="/person/18c2fce57420c1648253c03dcb479313c/author/0"><span itemprop="name">H. Kahle</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M Jetter" itemprop="url" href="/person/18c2fce57420c1648253c03dcb479313c/author/1"><span itemprop="name">M. Jetter</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="P Michler" itemprop="url" href="/person/18c2fce57420c1648253c03dcb479313c/author/2"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><em><span itemprop="publisher">Wiley-VCH, Weinheim, 197 – 228</span>, </em>(<em><span>2021<meta content="2021" itemprop="datePublished"/></span></em>)</span>Wed May 25 10:31:02 CEST 2022Vertical External Cavity Surface Emitting Lasers – VECSEL Technology and Applications”Optically pumped red-emitting AlGaInP-VECSELs and the MECSEL concept2021ihfg Vertical External Cavity Surface Emitting Lasers – VECSEL Technology and Applicationshttps://puma.ub.uni-stuttgart.de/bibtex/23831818915b361e733b0dc875d75c6cc/renerehwagenrenerehwagen2022-05-25T10:27:50+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/190afd297703b8557c8ade68ca847d192/author/0"><span itemprop="name">M. Jetter</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/190afd297703b8557c8ade68ca847d192/author/1"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><em><span itemprop="publisher">Wiley-VCH, Weinheim</span>, </em>(<em><span>2021<meta content="2021" itemprop="datePublished"/></span></em>)</span>Wed May 25 10:27:50 CEST 2022Vertical External Cavity Surface Emitting Lasers – VECSEL Technology and Applications2021ihfg VORRICHTUNG UND VERFAHREN ZUR ERZEUGUNG EINER EINZELPHOTONENEMISSIONhttps://puma.ub.uni-stuttgart.de/bibtex/2e8d2ea5f7d296d480a917641e2729ab3/renerehwagenrenerehwagen2022-05-24T14:20:51+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1182d097cf37489d7d2445e2d348b296e/author/0"><span itemprop="name">P. Michler</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/1182d097cf37489d7d2445e2d348b296e/author/1"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Thomas Herzog" itemprop="url" href="/person/1182d097cf37489d7d2445e2d348b296e/author/2"><span itemprop="name">T. Herzog</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Matthias Paul" itemprop="url" href="/person/1182d097cf37489d7d2445e2d348b296e/author/3"><span itemprop="name">M. Paul</span></a></span></span>. </span><span class="additional-entrytype-information">(<em><span>2021<meta content="2021" itemprop="datePublished"/></span></em>)</span>Tue May 24 14:20:51 CEST 2022VORRICHTUNG UND VERFAHREN ZUR ERZEUGUNG EINER EINZELPHOTONENEMISSION2021ihfg Faserkollimator mit stirnseitig betätigbarer Fokussiereinheit und Kollimatorsystemhttps://puma.ub.uni-stuttgart.de/bibtex/2c7ca76dcdeaf8517267757ca8ee55621/renerehwagenrenerehwagen2022-05-24T14:17:45+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1935cf91bae3d8a02c72b0a3fc573eebb/author/0"><span itemprop="name">P. Michler</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Simone Portalupi" itemprop="url" href="/person/1935cf91bae3d8a02c72b0a3fc573eebb/author/1"><span itemprop="name">S. Portalupi</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jonas Weber" itemprop="url" href="/person/1935cf91bae3d8a02c72b0a3fc573eebb/author/2"><span itemprop="name">J. Weber</span></a></span></span>. </span><span class="additional-entrytype-information">(<em><span>2021<meta content="2021" itemprop="datePublished"/></span></em>)</span>Tue May 24 14:17:45 CEST 2022Faserkollimator mit stirnseitig betätigbarer Fokussiereinheit und Kollimatorsystem2021ihfg InGaAsP VECSEL for Watt-level output at a wavelength around 765 nmhttps://puma.ub.uni-stuttgart.de/bibtex/286e005c63b86b4fa0bfe1ece14470bd0/renerehwagenrenerehwagen2022-05-19T11:25:13+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Marius Grossmann" itemprop="url" href="/person/1c834c0cb5ac59f52749c8b6f6d447370/author/0"><span itemprop="name">M. Grossmann</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/1c834c0cb5ac59f52749c8b6f6d447370/author/1"><span itemprop="name">M. Jetter</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1c834c0cb5ac59f52749c8b6f6d447370/author/2"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Optics Letters</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">47 </span></span>(<span itemprop="issueNumber">9</span>):
<span itemprop="pagination">2178-2181</span></em> </span>(<em><span>2022<meta content="2022" itemprop="datePublished"/></span></em>)</span>Thu May 19 11:25:13 CEST 2022Optics Letters92178-2181InGaAsP VECSEL for Watt-level output at a wavelength around 765 nm472022ihfg High-power quasi-CW diode-pumped 750-nm AlGaAs VECSEL emitting a peak power of 29.60.25emW and an average power of 8.50.25emWhttps://puma.ub.uni-stuttgart.de/bibtex/2825f87b7abc1046bf0af9abff16a8b75/renerehwagenrenerehwagen2022-05-19T11:16:51+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Pascal J. Weinert" itemprop="url" href="/person/1809b7c66068afa4f72157d8026fe6723/author/0"><span itemprop="name">P. Weinert</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Marius Grossmann" itemprop="url" href="/person/1809b7c66068afa4f72157d8026fe6723/author/1"><span itemprop="name">M. Grossmann</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Uwe Brauch" itemprop="url" href="/person/1809b7c66068afa4f72157d8026fe6723/author/2"><span itemprop="name">U. Brauch</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/1809b7c66068afa4f72157d8026fe6723/author/3"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1809b7c66068afa4f72157d8026fe6723/author/4"><span itemprop="name">P. Michler</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Thomas Graf" itemprop="url" href="/person/1809b7c66068afa4f72157d8026fe6723/author/5"><span itemprop="name">T. Graf</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Marwan Abdou Ahmed" itemprop="url" href="/person/1809b7c66068afa4f72157d8026fe6723/author/6"><span itemprop="name">M. Ahmed</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Optics Letters</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">47 </span></span>(<span itemprop="issueNumber">8</span>):
<span itemprop="pagination">1980</span></em> </span>(<em><span>April 2022<meta content="April 2022" itemprop="datePublished"/></span></em>)</span>Thu May 19 11:16:51 CEST 2022Optics Lettersapr81980High-power quasi-{CW} diode-pumped 750-nm {AlGaAs} {VECSEL} emitting a peak power of 29.6{\hspace{0.25em}}W and an average power of 8.5{\hspace{0.25em}}W472022ihfg High-power quasi-CW diode-pumped 750-nm AlGaAs VECSEL emitting a peak power of 29.6 W and an average power of 8.5 WIntegrated Optoelectronic Devices Using Lab-On-Fiber Technologyhttps://puma.ub.uni-stuttgart.de/bibtex/2ec99325d246d7405de4a9d8958646302/renerehwagenrenerehwagen2022-03-22T10:36:20+01:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Armando Ricciardi" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/0"><span itemprop="name">A. Ricciardi</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Zimmer" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/1"><span itemprop="name">M. Zimmer</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Norbert Witz" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/2"><span itemprop="name">N. Witz</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Alberto Micco" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/3"><span itemprop="name">A. Micco</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Federica Piccirillo" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/4"><span itemprop="name">F. Piccirillo</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Martino Giaquinto" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/5"><span itemprop="name">M. Giaquinto</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Mathias Kaschel" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/6"><span itemprop="name">M. Kaschel</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Joachim Burghartz" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/7"><span itemprop="name">J. Burghartz</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/8"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1b0a50cc6ea2d5fd64e84ba5cef59aac8/author/9"><span itemprop="name">P. Michler</span></a></span></span> and 2 other author(s). </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Advanced Materials Technologies</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">n/a </span></span>(<span itemprop="issueNumber">n/a</span>):
<span itemprop="pagination">2101681</span></em> </span>(<em><span>2022<meta content="2022" itemprop="datePublished"/></span></em>)</span>Tue Mar 22 10:36:20 CET 2022Advanced Materials Technologiesn/a2101681Integrated Optoelectronic Devices Using Lab-On-Fiber Technologyn/a2022ihfg Abstract Silica fibers are nowadays cornerstones in several technological implementations from long-distance communication, to sensing applications in many scenarios. To further enlarge the functionalities, the compactness, and the performances of fiber-based devices, one needs to reliably integrate small-footprint components such as sensors, light sources, and detectors onto single optical fiber substrates. Here, a novel proof of concept is presented to deterministically integrate optoelectronic chips onto the facet of an optical fiber, further implementing the electrical contacting between the chip and fiber itself. The CMOS-compatible procedure is based on a suitable combination of metal deposition, laser machining, and micromanipulation, directly applied onto the fiber tip. The proposed method is validated by transferring, aligning, and bonding a quantum-well based laser on the core of a multimode optical fiber. The successful monolithic device integration on fiber shows simultaneously electrical contacting between the laser and the ferrule, and 20\% light in-coupling in the fiber. These results pave new ways to develop the next generation of optoelectronic systems on fiber. The technological approach will set a new relevant milestone along the lab-on-fiber roadmap, opening new avenues for a novel class of integrated optoelectronic fiber platforms, featuring unrivaled miniaturization, compactness, and performances levels, designed for specific applications.Integrated Optoelectronic Devices Using Lab‐On‐Fiber Technology - Ricciardi - - Advanced Materials Technologies - Wiley Online LibraryDirect Imaging of the Carrier Capture into Individual InP Quantum Dots of a Semiconductor Disk Laser Membranehttps://puma.ub.uni-stuttgart.de/bibtex/2195b3ab866e69cf1db5c8c1205fd5502/renerehwagenrenerehwagen2022-03-09T08:57:01+01:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Frank Bertram" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/0"><span itemprop="name">F. Bertram</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Gordon Schmidt" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/1"><span itemprop="name">G. Schmidt</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Julie Kernchen" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/2"><span itemprop="name">J. Kernchen</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Veit" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/3"><span itemprop="name">P. Veit</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Hannes Schürmann" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/4"><span itemprop="name">H. Schürmann</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Ana Ćutuk" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/5"><span itemprop="name">A. Ćutuk</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/6"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/7"><span itemprop="name">P. Michler</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jürgen Christen" itemprop="url" href="/person/1f39c43cde17e3b1b1893bb64ba37c71b/author/8"><span itemprop="name">J. Christen</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">ACS Nano</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">16 </span></span>(<span itemprop="issueNumber">3</span>):
<span itemprop="pagination">4619-4628</span></em> </span>(<em><span>2022<meta content="2022" itemprop="datePublished"/></span></em>)<em>PMID: 35258922.</em></span>Wed Mar 09 08:57:01 CET 2022ACS NanoPMID: 3525892234619-4628Direct Imaging of the Carrier Capture into Individual InP Quantum Dots of a Semiconductor Disk Laser Membrane162022ihfg We report on nanoscopic exploration of the luminescence from individual InP quantum dots (QDs) by means of highly spatially resolved cathodoluminescence (CL) spectroscopy directly performed in a scanning transmission electron microscope (STEM). A 7-fold layer stack with high-density InP quantum dots is embedded as an active medium membrane in an external-cavity surface-emitting laser. We characterize the vertical transfer of carriers within the periodic separate confinement heterostructure and determine the capture efficiency of carriers from the cladding layer into the quantum dot layers. Benefiting from the nanoscale resolution of our STEM-CL, we perform single-dot spectroscopy on single isolated QDs in the STEM lamella resolving the details of the excitonic structure of individual quantum dots. Executing highly spatially resolved spectrum line scans within the QD layers, we directly visualize the lateral transport, i.e., the efficient lateral capture of carriers into an individual QD. We observe a characteristic change of the spectral fingerprint during this line scan, while the electron beam is approaching and subsequently receding from the quantum dot position. This directly correlates to the increase and decrease of the numbers of excess carriers reaching the dot, i.e., altering the quantum dot population. The characteristic shift of emission energies visualize the renormalization of the ground-state energy of the single dot, and the intensity ratio of the excitonic recombinations verifies this change of the occupation and the state-filling. Direct Imaging of the Carrier Capture into Individual InP Quantum Dots of a Semiconductor Disk Laser Membrane | ACS NanoThin-film InGaAs metamorphic buffer for telecom C-band InAs quantum dots and optical resonators on GaAs platformhttps://puma.ub.uni-stuttgart.de/bibtex/28a1bb9d486540efef87ddc221e3dde44/renerehwagenrenerehwagen2022-02-15T15:16:00+01:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Robert Sittig" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/0"><span itemprop="name">R. Sittig</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Cornelius Nawrath" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/1"><span itemprop="name">C. Nawrath</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Sascha Kolatschek" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/2"><span itemprop="name">S. Kolatschek</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Stephanie Bauer" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/3"><span itemprop="name">S. Bauer</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Richard Schaber" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/4"><span itemprop="name">R. Schaber</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jiasheng Huang" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/5"><span itemprop="name">J. Huang</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Ponraj Vijayan" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/6"><span itemprop="name">P. Vijayan</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Pascal Pruy" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/7"><span itemprop="name">P. Pruy</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Simone Luca Portalupi" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/8"><span itemprop="name">S. Portalupi</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/14b11b39db0af942ceb40fbc2fd12de67/author/9"><span itemprop="name">M. Jetter</span></a></span></span> and 1 other author(s). </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Nanophotonics</span>, </em> </span>(<em><span>2022<meta content="2022" itemprop="datePublished"/></span></em>)</span>Tue Feb 15 15:16:00 CET 2022NanophotonicsThin-film InGaAs metamorphic buffer for telecom C-band InAs quantum dots and optical resonators on GaAs platform2022ihfg The GaAs-based material system is well-known for hosting InAs quantum dots (QDs) with outstanding optical properties, typically emitting at a wavelength of around 900 nm. The insertion of a metamorphic buffer (MMB) can shift this emission to the technologically attractive telecom C-band range centered at 1550 nm. However, the thickness of common MMB designs (>1 μm) limits their compatibility with most photonic resonator types. Here, we report on the metal–organic vapor-phase epitaxy (MOVPE) growth of a novel InGaAs MMB with a nonlinear indium content grading profile designed to maximize plastic relaxation within minimal layer thickness. This allows us to achieve the necessary transition of the lattice constant and to provide a smooth surface for QD growth within 180 nm. Single-photon emission at 1550 nm from InAs QDs deposited on top of this thin-film MMB is demonstrated. The strength of the new design is proven by integrating it into a bullseye cavity via nano-structuring techniques. The presented advances in the epitaxial growth of QD/MMB structures form the basis for the fabrication of high-quality telecom nonclassical light sources as a key component of photonic quantum technologies.Thin-film InGaAs metamorphic buffer for telecom C-band InAs quantum dots and optical resonators on GaAs platformNon-equilibrium spin noise spectroscopy of a single quantum dot operating at fiber telecommunication wavelengthshttps://puma.ub.uni-stuttgart.de/bibtex/23ec909f742c2e3f50791b0eacf668e82/renerehwagenrenerehwagen2022-02-14T14:07:49+01:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Tian-Jiao Sun" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/0"><span itemprop="name">T. Sun</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="P. Sterin" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/1"><span itemprop="name">P. Sterin</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="L. Lengert" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/2"><span itemprop="name">L. Lengert</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="C. Nawrath" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/3"><span itemprop="name">C. Nawrath</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M. Jetter" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/4"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="P. Michler" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/5"><span itemprop="name">P. Michler</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Yang Ji" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/6"><span itemprop="name">Y. Ji</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="J. Hübner" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/7"><span itemprop="name">J. Hübner</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M. Oestreich" itemprop="url" href="/person/195f3356e198fad52c495412ab04596a0/author/8"><span itemprop="name">M. Oestreich</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Journal of Applied Physics</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">131 </span></span>(<span itemprop="issueNumber">6</span>):
<span itemprop="pagination">065703</span></em> </span>(<em><span>2022<meta content="2022" itemprop="datePublished"/></span></em>)</span>Mon Feb 14 14:07:49 CET 2022Journal of Applied Physics6065703Non-equilibrium spin noise spectroscopy of a single quantum dot operating at fiber telecommunication wavelengths1312022ihfg We report on the spin and occupation noise of a single, positively charged (InGa)As quantum dot emitting photons in the telecommunication C-band. The spin noise spectroscopy measurements are carried out at a temperature of 4.2 K in dependence on intensity and detuning in the regime beyond thermal equilibrium. The spin noise spectra yield in combination with an elaborate theoretical model the hole-spin relaxation time of the positively charged quantum dot and the Auger recombination and the electron-spin relaxation time of the trion state. The extracted Auger recombination time of this quantum dot emitting at 1.55μm is comparable to the typical Auger recombination times on the order of a few μs measured in traditionally grown InAs/GaAs quantum dots emitting at around 900 nm. Non-equilibrium spin noise spectroscopy of a single quantum dot operating at fiber telecommunication wavelengths: Journal of Applied Physics: Vol 131, No 6Optical charge injection and coherent control of a quantum-dot spin-qubit emitting at telecom wavelengthshttps://puma.ub.uni-stuttgart.de/bibtex/223ea55bbc5e51a60d7ba4cedf7a5860f/renerehwagenrenerehwagen2022-02-09T21:55:20+01:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Łukasz Dusanowski" itemprop="url" href="/person/1704e3366bb9788f838ba182311dbae1a/author/0"><span itemprop="name">{. Dusanowski</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Cornelius Nawrath" itemprop="url" href="/person/1704e3366bb9788f838ba182311dbae1a/author/1"><span itemprop="name">C. Nawrath</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Simone L. Portalupi" itemprop="url" href="/person/1704e3366bb9788f838ba182311dbae1a/author/2"><span itemprop="name">S. Portalupi</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/1704e3366bb9788f838ba182311dbae1a/author/3"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Tobias Huber" itemprop="url" href="/person/1704e3366bb9788f838ba182311dbae1a/author/4"><span itemprop="name">T. Huber</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Sebastian Klembt" itemprop="url" href="/person/1704e3366bb9788f838ba182311dbae1a/author/5"><span itemprop="name">S. Klembt</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1704e3366bb9788f838ba182311dbae1a/author/6"><span itemprop="name">P. Michler</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Sven Höfling" itemprop="url" href="/person/1704e3366bb9788f838ba182311dbae1a/author/7"><span itemprop="name">S. Höfling</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Nature Communications</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">13 </span></span>(<span itemprop="issueNumber">1</span>):
<span itemprop="pagination">748</span></em> </span>(<em><span>Feb 8, 2022<meta content="Feb 8, 2022" itemprop="datePublished"/></span></em>)</span>Wed Feb 09 21:55:20 CET 2022Nature Communicationsfeb1748Optical charge injection and coherent control of a quantum-dot spin-qubit emitting at telecom wavelengths132022ihfg 08Solid-state quantum emitters with manipulable spin-qubits are promising platforms for quantum communication applications. Although such light-matter interfaces could be realized in many systems only a few allow for light emission in the telecom bands necessary for long-distance quantum networks. Here, we propose and implement an optically active solid-state spin-qubit based on a hole confined in a single InAs/GaAs quantum dot grown on an InGaAs metamorphic buffer layer emitting photons in the C-band. We lift the hole spin-degeneracy using an external magnetic field and demonstrate hole injection, initialization, read-out and complete coherent control using picosecond optical pulses. These results showcase a solid-state spin-qubit platform compatible with preexisting optical fiber networks.Optical charge injection and coherent control of a quantum-dot spin-qubit emitting at telecom wavelengths | Nature CommunicationsSpecial topic on non-classical light emitters and single-photon detectorshttps://puma.ub.uni-stuttgart.de/bibtex/22360e5ea641914370e5a58ffa51c9343/renerehwagenrenerehwagen2022-01-04T16:37:12+01:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Christoph Becher" itemprop="url" href="/person/1d7f84af2a2aefeb2af1587b8774cdb6a/author/0"><span itemprop="name">C. Becher</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Sven Höfling" itemprop="url" href="/person/1d7f84af2a2aefeb2af1587b8774cdb6a/author/1"><span itemprop="name">S. Höfling</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jin Liu" itemprop="url" href="/person/1d7f84af2a2aefeb2af1587b8774cdb6a/author/2"><span itemprop="name">J. Liu</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1d7f84af2a2aefeb2af1587b8774cdb6a/author/3"><span itemprop="name">P. Michler</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Wolfram Pernice" itemprop="url" href="/person/1d7f84af2a2aefeb2af1587b8774cdb6a/author/4"><span itemprop="name">W. Pernice</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Costanza Toninelli" itemprop="url" href="/person/1d7f84af2a2aefeb2af1587b8774cdb6a/author/5"><span itemprop="name">C. Toninelli</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Applied Physics Letters</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">120 </span></span>(<span itemprop="issueNumber">1</span>):
<span itemprop="pagination">010401</span></em> </span>(<em><span>2022<meta content="2022" itemprop="datePublished"/></span></em>)</span>Tue Jan 04 16:37:12 CET 2022Applied Physics Letters1010401Special topic on non-classical light emitters and single-photon detectors1202022ihfg Special topic on non-classical light emitters and single-photon detectors: Applied Physics Letters: Vol 120, No 1Achieving stable fiber coupling of quantum dot telecom C-band single-photons to an SOI photonic devicehttps://puma.ub.uni-stuttgart.de/bibtex/22e7f9310740a48a203fb7d0665f5eb33/renerehwagenrenerehwagen2021-12-07T15:18:53+01:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Stephanie Bauer" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/0"><span itemprop="name">S. Bauer</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Dongze Wang" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/1"><span itemprop="name">D. Wang</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Niklas Hoppe" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/2"><span itemprop="name">N. Hoppe</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Cornelius Nawrath" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/3"><span itemprop="name">C. Nawrath</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Julius Fischer" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/4"><span itemprop="name">J. Fischer</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Norbert Witz" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/5"><span itemprop="name">N. Witz</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Mathias Kaschel" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/6"><span itemprop="name">M. Kaschel</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Christian Schweikert" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/7"><span itemprop="name">C. Schweikert</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/8"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Simone L. Portalupi" itemprop="url" href="/person/1771ff4d6c9244d79e276d4209228dc38/author/9"><span itemprop="name">S. Portalupi</span></a></span></span> and 2 other author(s). </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Applied Physics Letters</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">119 </span></span>(<span itemprop="issueNumber">21</span>):
<span itemprop="pagination">211101</span></em> </span>(<em><span>2021<meta content="2021" itemprop="datePublished"/></span></em>)</span>Tue Dec 07 15:18:53 CET 2021Applied Physics Letters21211101Achieving stable fiber coupling of quantum dot telecom C-band single-photons to an SOI photonic device1192021ihfg The well-established silicon-on-insulator platform is very promising for large-scale integrated photonic and quantum photonic technologies due to the mature manufacturing technology and integration density. Here, we present an efficient and stable fiber-to-chip coupling, which enables the injection of single photons from telecom quantum dots into a silicon-on-insulator photonic chip. Two additional fibers further couple the chip to single-photon detectors. The approach chosen to achieve steady fiber-chip coupling is based on the use of grating couplers steadily packaged with angled single-mode fibers. Using this technique, coupling efficiencies between the fiber and the SOI chip as high as 69.1\% per grating coupler (including the taper losses) are reached. The effective interface between the quantum light generated by quantum dots and the silicon components is verified via the measurement of the second-order correlation function using a Hanbury–Brown and Twiss setup. With g(2)(0)=0.051±0.001, it clearly proves the single-photon nature of the injected QD photons. This demonstrates the reliability of the interfacing method and opens the route to employ telecom quantum dots as non-classical light sources with high complexity silicon photonic functionalities. Achieving stable fiber coupling of quantum dot telecom C-band single-photons to an SOI photonic device: Applied Physics Letters: Vol 119, No 21Highly Polarized Single Photons from Strain-Induced Quasi-1D Localized Excitons in WSe2https://puma.ub.uni-stuttgart.de/bibtex/239136512d924e0a26d11f6cf8de78f8b/renerehwagenrenerehwagen2021-09-14T14:14:39+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Qixing Wang" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/0"><span itemprop="name">Q. Wang</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Julian Maisch" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/1"><span itemprop="name">J. Maisch</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Fangdong Tang" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/2"><span itemprop="name">F. Tang</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Dong Zhao" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/3"><span itemprop="name">D. Zhao</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Sheng Yang" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/4"><span itemprop="name">S. Yang</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Raphael Joos" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/5"><span itemprop="name">R. Joos</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Simone Luca Portalupi" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/6"><span itemprop="name">S. Portalupi</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/7"><span itemprop="name">P. Michler</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jurgen H. Smet" itemprop="url" href="/person/16f2b5db4238a38093c10762eff529d69/author/8"><span itemprop="name">J. Smet</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Nano Letters</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">21 </span></span>(<span itemprop="issueNumber">17</span>):
<span itemprop="pagination">7175-7182</span></em> </span>(<em><span>2021<meta content="2021" itemprop="datePublished"/></span></em>)<em>PMID: 34424710.</em></span>Tue Sep 14 14:14:39 CEST 2021Nano LettersPMID: 34424710177175-7182Highly Polarized Single Photons from Strain-Induced Quasi-1D Localized Excitons in WSe2212021ihfg Single photon emission from localized excitons in two-dimensional (2D) materials has been extensively investigated because of its relevance for quantum information applications. Prerequisites are the availability of photons with high purity polarization and controllable polarization orientation that can be integrated with optical cavities. Here, deformation strain along edges of prepatterned square-shaped substrate protrusions is exploited to induce quasi-one-dimensional (1D) localized excitons in WSe2 monolayers as an elegant way to get photons that fulfill these requirements. At zero magnetic field, the emission is linearly polarized with 95\% purity because exciton states are valley hybridized with equal shares of both valleys and predominant emission from excitons with a dipole moment along the elongated direction. In a strong field, one valley is favored and the linear polarization is converted to high-purity circular polarization. This deterministic control over polarization purity and orientation is a valuable asset in the context of integrated quantum photonics. Highly Polarized Single Photons from Strain-Induced Quasi-1D Localized Excitons in WSe2 | Nano LettersBright Purcell Enhanced Single-Photon Source in the Telecom O-Band Based on a Quantum Dot in a Circular Bragg Gratinghttps://puma.ub.uni-stuttgart.de/bibtex/236f1c704567645124a836b7c884a4691/renerehwagenrenerehwagen2021-09-10T10:05:48+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Sascha Kolatschek" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/0"><span itemprop="name">S. Kolatschek</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Cornelius Nawrath" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/1"><span itemprop="name">C. Nawrath</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Stephanie Bauer" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/2"><span itemprop="name">S. Bauer</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jiasheng Huang" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/3"><span itemprop="name">J. Huang</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Julius Fischer" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/4"><span itemprop="name">J. Fischer</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Robert Sittig" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/5"><span itemprop="name">R. Sittig</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Michael Jetter" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/6"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Simone Luca Portalupi" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/7"><span itemprop="name">S. Portalupi</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Peter Michler" itemprop="url" href="/person/1fd323fbd08f0c3dde0c7198906f1b441/author/8"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Nano Letters</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">0 </span></span>(<span itemprop="issueNumber">0</span>):
<span itemprop="pagination">null</span></em> </span>(<em><span>2021<meta content="2021" itemprop="datePublished"/></span></em>)<em>PMID: 34478316.</em></span>Fri Sep 10 10:05:48 CEST 2021Nano LettersPMID: 344783160nullBright Purcell Enhanced Single-Photon Source in the Telecom O-Band Based on a Quantum Dot in a Circular Bragg Grating02021ihfg The combination of semiconductor quantum dots with photonic cavities is a promising way to realize nonclassical light sources with state-of-the-art performances regarding brightness, indistinguishability, and repetition rate. Here we demonstrate the coupling of InGaAs/GaAs QDs emitting in the telecom O-band to a circular Bragg grating cavity. We demonstrate a broadband geometric extraction efficiency enhancement by investigating two emission lines under above-band excitation, inside and detuned from the cavity mode, respectively. In the first case, a Purcell enhancement of 4 is attained. For the latter case, an end-to-end brightness of 1.4\% with a brightness at the first lens of 23\% is achieved. Using p-shell pumping, a combination of high count rate with pure single-photon emission (g(2)(0) = 0.01 in saturation) is achieved. Finally, a good single-photon purity (g(2)(0) = 0.13) together with a high detector count rate of 191 kcps is demonstrated for a temperature of up to 77 K. Bright Purcell Enhanced Single-Photon Source in the Telecom O-Band Based on a Quantum Dot in a Circular Bragg Grating | Nano LettersResonance fluorescence of single In(Ga)As quantum dots emitting in the telecom C-bandhttps://puma.ub.uni-stuttgart.de/bibtex/2cf3d2312c4137788d942b458a996eace/renerehwagenrenerehwagen2021-07-08T09:40:45+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="C Nawrath" itemprop="url" href="/person/1e5427059eb49b55905e476cfa21a567f/author/0"><span itemprop="name">C. Nawrath</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="H Vural" itemprop="url" href="/person/1e5427059eb49b55905e476cfa21a567f/author/1"><span itemprop="name">H. Vural</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="J Fischer" itemprop="url" href="/person/1e5427059eb49b55905e476cfa21a567f/author/2"><span itemprop="name">J. Fischer</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="R Schaber" itemprop="url" href="/person/1e5427059eb49b55905e476cfa21a567f/author/3"><span itemprop="name">R. Schaber</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="S. L. Portalupi" itemprop="url" href="/person/1e5427059eb49b55905e476cfa21a567f/author/4"><span itemprop="name">S. Portalupi</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M Jetter" itemprop="url" href="/person/1e5427059eb49b55905e476cfa21a567f/author/5"><span itemprop="name">M. Jetter</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="P Michler" itemprop="url" href="/person/1e5427059eb49b55905e476cfa21a567f/author/6"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Appl. Phys. Lett.</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">118 </span></span>(<span itemprop="issueNumber">24</span>):
<span itemprop="pagination">244002--</span></em> </span>(<em><span>June 2021<meta content="June 2021" itemprop="datePublished"/></span></em>)</span>Thu Jul 08 09:40:45 CEST 2021Applied Physics LettersAppl. Phys. Lett.jun24244002--Resonance fluorescence of single In(Ga)As quantum dots emitting in the telecom C-band1182021ihfg An emission wavelength around 1550 nm (telecom C-band) is highly appealing for nonclassical light sources, among others, due to the absorption minimum in standard glass fibers. In particular, sem...Resonance fluorescence of single In(Ga)As quantum dots emitting in the telecom C-band: Applied Physics Letters: Vol 118, No 24Delaying two-photon Fock states in hot cesium vapor using single photons generated on demand from a semiconductor quantum dothttps://puma.ub.uni-stuttgart.de/bibtex/25983fe9f1557a15e22467f96c71868ea/renerehwagenrenerehwagen2021-05-06T13:46:25+02:00ihfg <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="H. Vural" itemprop="url" href="/person/1cf423561a813bdc7e68029b955f0c3ff/author/0"><span itemprop="name">H. Vural</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="S. Seyfferle" itemprop="url" href="/person/1cf423561a813bdc7e68029b955f0c3ff/author/1"><span itemprop="name">S. Seyfferle</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="I. Gerhardt" itemprop="url" href="/person/1cf423561a813bdc7e68029b955f0c3ff/author/2"><span itemprop="name">I. Gerhardt</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="M. Jetter" itemprop="url" href="/person/1cf423561a813bdc7e68029b955f0c3ff/author/3"><span itemprop="name">M. Jetter</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="S. L. Portalupi" itemprop="url" href="/person/1cf423561a813bdc7e68029b955f0c3ff/author/4"><span itemprop="name">S. Portalupi</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="P. Michler" itemprop="url" href="/person/1cf423561a813bdc7e68029b955f0c3ff/author/5"><span itemprop="name">P. Michler</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Phys. Rev. B</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">103 </span></span>(<span itemprop="issueNumber">19</span>):
<span itemprop="pagination">195304</span></em> </span>(<em><span>May 2021<meta content="May 2021" itemprop="datePublished"/></span></em>)</span>Thu May 06 13:46:25 CEST 2021Phys. Rev. Bmay19195304Delaying two-photon Fock states in hot cesium vapor using single photons generated on demand from a semiconductor quantum dot1032021ihfg Phys. Rev. B 103, 195304 (2021) - Delaying two-photon Fock states in hot cesium vapor using single photons generated on demand from a semiconductor quantum dot