Online optimization for optical readout of a single electron spin in diamond

Lin, Xue1,2,3; Fan, Jingwei1,2; Ye, Runchuan1,2,3; Zhou, Mingti3; Song, Yumeng1,2,3; Lu, Dawei4; Xu, Nanyang3

2023-04-01

10.1007/s11467-022-1235-5

Frontiers of Physics   影响因子和分区

2095-0462

2095-0470

The nitrogen-vacancy (NV) center in diamond has been developed as a promising platform for quantum sensing, especially for magnetic field measurements in the nano-tesla range with a nano-meter resolution. Optical spin readout performance has a direct effect on the signal-to-noise ratio (SNR) of experiments. In this work, we introduce an online optimization method to customize the laser waveform for readout. Both simulations and experiments reveal that our new scheme optimizes the optically detected magnetic resonance in NV center. The SNR of optical spin readout has been witnessed a 44.1% increase in experiments. In addition, we applied the scheme to the Rabi oscillation experiment, which shows an improvement of 46.0% in contrast and a reduction of 12.1% in mean deviation compared to traditional constant laser power SNR optimization. This scheme is promising to improve sensitivities for a wide range of NV-based applications in the future.

NV center readout signal-to-noise ratio online optimization

SCI

英语

通讯

National Key R&D Program of China["2018YFA0306600","2019YFA0308100"] ; National Natural Science Foundation of China["92265114","92265204","11875159"] ; Research Initiation Project of Zhejiang Lab[K2022MB0PI02]

Physics

Physics, Multidisciplinary

WOS:000913496700001

HIGHER EDUCATION PRESS

2-s2.0-85146748798

Web of Science

1.Hefei Univ Technol, Sch Microelect, Hefei 230009, Peoples R China
2.Hefei Univ Technol, Sch Phys, Hefei 230009, Peoples R China
3.Zhejiang Lab, Res Ctr Quantum Sensing, Hangzhou 311000, Peoples R China
4.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Dept Phys, Shenzhen 518055, Peoples R China

Lin, Xue,Fan, Jingwei,Ye, Runchuan,et al. Online optimization for optical readout of a single electron spin in diamond[J]. Frontiers of Physics,2023,18(2).

Lin, Xue.,Fan, Jingwei.,Ye, Runchuan.,Zhou, Mingti.,Song, Yumeng.,...&Xu, Nanyang.(2023).Online optimization for optical readout of a single electron spin in diamond.Frontiers of Physics,18(2).

Lin, Xue,et al."Online optimization for optical readout of a single electron spin in diamond".Frontiers of Physics 18.2(2023).