DataVXAIP AdvancesPaper
journal article·2022-05-01Open access

Optimization of optical spin readout of the nitrogen-vacancy center in diamond based on spin relaxation model

Yuki Nakamura, Hideyuki Watanabe, Hitoshi Sumiya, Kohei M. Itoh, Kento Sasaki, Junko Ishi-Hayase, Kensuke Kobayashi

AIP Advances· Volume 12· Issue 5
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Source abstract

Abstract

For quantum sensing, it is vital to develop an efficient technique for determining the quantum state of the sensor. We optimize the weighting of the photoluminescence intensity for readout of the spin state of the nitrogen-vacancy (NV) center in diamond. We find that adopting a physical model that considers the optical transitions and relaxations of the NV center allows for an efficient readout. Our method improves the signal-to-noise ratio of the readout by 5.4% in a short time of 3 s, while the existing methods typically require 1 min of integration time. We also show that our technique enhances the readout of the nuclear spin memory. The demonstrated way is helpful for a wide range of measurements, from a few minutes to several days.
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Research context

OpenAlex topics: Diamond and Carbon-based Materials Research · High-pressure geophysics and materials · Electronic and Structural Properties of Oxides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Fundamental Science and Technology, Keio University 1 , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

Device Technology Research Institute, National Institute of Advanced Industrial Science and Technology 2 , Tsukuba Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan

Advanced Materials Laboratory, Sumitomo Electric Industries, Ltd. 3 , Itami, Hyogo 664-0016, Japan

Center for Spintronics Research Network, Keio University 4 , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

Department of Physics, The University of Tokyo 5 , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

Institute for Physics of Intelligence, The University of Tokyo 6 , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

Trans-scale Quantum Science Institute, The University of Tokyo 7 , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

Funding

Japan Society for the Promotion of Science · Japan Science and Technology Agency

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