%0 Journal Article %1 tritschler2025chipintegratedsinglemodecoherentsqueezedlight %A Tritschler, Patrick %A Ohms, Torsten %A Schweikert, Christian %A Soezen, Onur %A Klenk, Rouven H. %A Abdani, Simon %A Vogel, Wolfgang %A Rademacher, Georg %A Zimmermann, André %A Degenfeld-Schonburg, Peter %D 2025 %J arXiv preprint arXiv:2502.16278 %K ifm_article tritschler zimmermann %T Chip-integrated single-mode coherent-squeezed light source using four-wave mixing in microresonators %U https://arxiv.org/abs/2502.16278 %X Squeezed light constitutes a key resource for quantum optical technologies including quantum sensing, computing, communication and metrology. For many applications the generation of squeezed light typically requires at least two nonlinear optical stages involving careful phase and frequency matching to achieve the required mixing of squeezed and coherent light. In our work, we introduce an on-chip system that simplifies the generation of coherent-squeezed light, utilizing only a single squeezing stage. We achieve this by pumping a silicon nitride (Si3N4) microring resonator to produce single-mode squeezed light through four-wave mixing at the same frequency as the pump mode, leveraging the inherent X3-nonlinearity of the Si3N4resonator. Our on-chip system demonstrates a squeezing of -4.7 dB with a clear perspective towards -10 dB squeezing. We also provide a theoretical model that describes the straightforward yet robust generation of single-mode squeezing at the injection locking point of the ring resonator. In fact, we show that a design with a normal dispersion can be used for robust generation of bright squeezed light without the need for careful suppression of unwanted nonlinear processes. Overall, our findings highlight an approach which drastically simplifies the generation of coherent-squeezed light in photonic integrated circuits.

@article{tritschler2025chipintegratedsinglemodecoherentsqueezedlight, abstract = {Squeezed light constitutes a key resource for quantum optical technologies including quantum sensing, computing, communication and metrology. For many applications the generation of squeezed light typically requires at least two nonlinear optical stages involving careful phase and frequency matching to achieve the required mixing of squeezed and coherent light. In our work, we introduce an on-chip system that simplifies the generation of coherent-squeezed light, utilizing only a single squeezing stage. We achieve this by pumping a silicon nitride (Si3N4) microring resonator to produce single-mode squeezed light through four-wave mixing at the same frequency as the pump mode, leveraging the inherent X3-nonlinearity of the Si3N4resonator. Our on-chip system demonstrates a squeezing of -4.7 dB with a clear perspective towards -10 dB squeezing. We also provide a theoretical model that describes the straightforward yet robust generation of single-mode squeezing at the injection locking point of the ring resonator. In fact, we show that a design with a normal dispersion can be used for robust generation of bright squeezed light without the need for careful suppression of unwanted nonlinear processes. Overall, our findings highlight an approach which drastically simplifies the generation of coherent-squeezed light in photonic integrated circuits.}, added-at = {2025-05-23T05:47:45.000+0200}, archiveprefix = {arXiv}, author = {Tritschler, Patrick and Ohms, Torsten and Schweikert, Christian and Soezen, Onur and Klenk, Rouven H. and Abdani, Simon and Vogel, Wolfgang and Rademacher, Georg and Zimmermann, André and Degenfeld-Schonburg, Peter}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/25f4cb85e5d83d51ddbbd31a043d6ae95/holgerruehl}, eprint = {2502.16278}, interhash = {e53d08557fd3eeef5798054d6ff050c0}, intrahash = {5f4cb85e5d83d51ddbbd31a043d6ae95}, journal = {arXiv preprint arXiv:2502.16278}, keywords = {ifm_article tritschler zimmermann}, preprinturl = {https://arxiv.org/abs/2502.16278}, primaryclass = {quant-ph}, timestamp = {2025-05-23T05:47:45.000+0200}, title = {Chip-integrated single-mode coherent-squeezed light source using four-wave mixing in microresonators}, url = {https://arxiv.org/abs/2502.16278}, year = 2025 }