Optimization of Temperature Sensitivity Using the Optically Detected Magnetic-Resonance Spectrum of a Nitrogen-Vacancy Center Ensemble
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-09-06 |
| Journal | Physical Review Applied |
| Authors | kan hayashi, Yuichiro Matsuzaki, Takashi Taniguchi, Takaaki Shimo-Oka, Ippei Nakamura |
| Institutions | National Institutes for Quantum and Radiological Science and Technology, Kyoto University Institute for Chemical Research |
| Citations | 49 |
Abstract
Section titled āAbstractāTemperature sensing with nitrogen vacancy (NV) centers using quantum\ntechniques is very promising and further development is expected. Recently, the\noptically detected magnetic resonance (ODMR) spectrum of a high-density\nensemble of the NV centers was reproduced with noise parameters [inhomogeneous\nmagnetic field, inhomogeneous strain (electric field) distribution, and\nhomogeneous broadening] of the NV center ensemble. In this study, we use ODMR\nto estimate the noise parameters of the NV centers in several diamonds. These\nparameters strongly depend on the spin concentration. This knowledge is then\napplied to theoretically predict the temperature sensitivity. Using the\ndiffraction-limited volume of 0.1 micron^3, which is the typical limit in\nconfocal microscopy, the optimal sensitivity is estimated to be around 0.76\nmK/Hz^(1/2) with an NV center concentration of 5.0e10^17/cm^3. This sensitivity\nis much higher than previously reported sensitivities, demonstrating the\nexcellent potential of temperature sensing with NV centers.\n