%0 Journal Article %1 article %A Michl, Julia %A Steiner, Jakob %A Denisenko, Andrej %A Bülau, Andre %A Zimmermann, Andre %A Nakamura, Kazuo %A Sumiya, Hitoshi %A Onoda, Shinobu %A Neumann, Philipp %A Isoya, Junichi %D 2019 %J Nano Letters %K %R 10.1021/acs.nanolett.9b00900 %T Robust and Accurate Electric Field Sensing with Solid State Spin Ensembles %V 19 %X Electron spins in solids constitute formidable quantum sensors. Individual defect centers in diamond were used to detect individual nuclear spins with nanometer scale resolution, and ensemble magnetometers rival SQUID and vapor cell magnetometers when taking into account room temperature operation and size. NV center spins can also detect electric field vectors, despite their weak coupling to electric fields. Here, we employ ensembles of NV center spins to measure macroscopic ac electric vector fields with high precision. We utilize low strain, 12C enriched diamond to achieve maximum sensitivity and tailor the spin Hamiltonian via proper magnetic field adjustment to map out the ac electric field strength and polarization and arrive at refined electric field coupling constants. For high precision measurements we combine classical lock-in detection with aspects from quantum phase estimation for effective suppression of technical noise. Eventually, this enables t^-1/2 uncertainty scaling of the electric field strength over extended averaging periods, enabling us to measure electric fields down to 10^-7 V/μm for an AC electric field with a frequency of 2 kHz and an amplitude of 0.012 V/µm.

@article{article, abstract = {Electron spins in solids constitute formidable quantum sensors. Individual defect centers in diamond were used to detect individual nuclear spins with nanometer scale resolution, and ensemble magnetometers rival SQUID and vapor cell magnetometers when taking into account room temperature operation and size. NV center spins can also detect electric field vectors, despite their weak coupling to electric fields. Here, we employ ensembles of NV center spins to measure macroscopic ac electric vector fields with high precision. We utilize low strain, 12C enriched diamond to achieve maximum sensitivity and tailor the spin Hamiltonian via proper magnetic field adjustment to map out the ac electric field strength and polarization and arrive at refined electric field coupling constants. For high precision measurements we combine classical lock-in detection with aspects from quantum phase estimation for effective suppression of technical noise. Eventually, this enables t^-1/2 uncertainty scaling of the electric field strength over extended averaging periods, enabling us to measure electric fields down to 10^-7 V/μm for an AC electric field with a frequency of 2 kHz and an amplitude of 0.012 V/µm.}, added-at = {2023-06-20T14:36:42.000+0200}, author = {Michl, Julia and Steiner, Jakob and Denisenko, Andrej and Bülau, Andre and Zimmermann, Andre and Nakamura, Kazuo and Sumiya, Hitoshi and Onoda, Shinobu and Neumann, Philipp and Isoya, Junichi}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2ce3034b31056a217803e6d609cec3298/samethalvaci}, doi = {10.1021/acs.nanolett.9b00900}, interhash = {c8841842871b8b34451a5ea9a2920934}, intrahash = {ce3034b31056a217803e6d609cec3298}, journal = {Nano Letters}, keywords = {}, month = {07}, timestamp = {2023-06-20T14:37:20.000+0200}, title = {Robust and Accurate Electric Field Sensing with Solid State Spin Ensembles}, volume = 19, year = 2019 }