Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 54, Issue 39, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/ac1191
Keywords
nitrogen vacancy center; time-varying pulse; spin readout
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Funding
- National Key R&D Program of China [2016YFB0501600]
- National Natural Science Foundation of China [61773046, 11805040]
- Advanced Innovation Center of Big Data Precision Medicine of Beihang University
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In this study, a new time-varying pulse waveform spin readout sequence method is proposed, which analyzes SNR by constructing a rate equation model of NV centers. Experimental results show that using an optimized waveform can increase the readout SNR.
In this work, a time-varying pulse waveform spin readout sequence method is proposed to improve the spin readout efficiency of nitrogen-vacancy (NV) centers. The method consists of performing the readout signal-to-noise ratio (SNR) analysis via the construction of a rate equation model of the NV center. We demonstrate a superior performance from the time-varying waveform readout approach and focus on the role of the readout optimization in quantum measurements. A detailed comparison of the readout SNR of the time-varying waveform and conventional waveform is provided. We experimentally demonstrate that the readout SNR is increased by 8% by utilizing an optimized waveform. It is anticipated that the improved method will effectively benefit the sensing capability of NV center ensembles and provide support for high-precision measurements of solid systems.
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