Optimization of Temperature Sensitivity Using the Optically Detected Magnetic-Resonance Spectrum of a Nitrogen-Vacancy Center Ensemble

Kan Hayashi, Yuichiro Matsuzaki, Takashi Taniguchi, Takaaki Shimo-Oka, Ippei Nakamura, Shinobu Onoda, Takeshi Ohshima, Hiroki Morishita, Masanori Fujiwara, Shiro Saito, and Norikazu Mizuochi

Phys. Rev. Applied 10, 034009 – Published 6 September 2018

Abstract

Temperature sensing with nitrogen-vacancy (NV) centers using quantum techniques is very promising, and further development is expected. Recently, the optically detected magnetic-resonance (ODMR) spectrum of a high-density ensemble of NV centers was reproduced with noise parameters [inhomogeneous magnetic field, inhomogeneous strain (electric field) distribution, and homogeneous broadening] of the NV center ensemble. In this study, we use ODMR to estimate the noise parameters of the NV centers in several diamonds. These parameters strongly depend on the spin concentration. This knowledge is then applied to theoretically predict the temperature sensitivity. Using the diffraction-limited volume of $0.1 μ m^{3}$ , which is the typical limit in confocal microscopy, we estimate the optimal sensitivity to be around $0.76 mK / \sqrt{Hz}$ with an NV center concentration of $5.0 \times 10^{17} / c m^{3}$ . This sensitivity is much higher than previously reported sensitivities, demonstrating the excellent potential of temperature sensing with NV centers.

Received 20 February 2018
Revised 24 May 2018

DOI:https://doi.org/10.1103/PhysRevApplied.10.034009

Physics Subject Headings (PhySH)

Noise Quantum metrology Quantum sensing

Nitrogen vacancy centers in diamond

Optically detected magnetic resonance

Quantum Information, Science & Technology

Authors & Affiliations

Kan Hayashi^1,2,3,*, Yuichiro Matsuzaki³, Takashi Taniguchi⁴, Takaaki Shimo-Oka¹, Ippei Nakamura^2,†, Shinobu Onoda⁵, Takeshi Ohshima⁵, Hiroki Morishita¹, Masanori Fujiwara¹, Shiro Saito³, and Norikazu Mizuochi¹

¹Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
²Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
³NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
⁴National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
⁵National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma 370-1292, Japan

^*hayashi@dia.kuicr.kyoto-u.ac.jp
^†Present address: RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan