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- W2994927203 abstract "The nitrogen-vacancy (N-V) center in diamond is a widely-used platform for quantum information processing and metrology. The electron-spin state of N-V center could be initialized and readout optically, and manipulated by resonate microwave fields. In this work, we analyze the dependence of electron-spin initialization on widths of laser pulses. We build a numerical model to simulate this process and verify the simulation results in experiment. Both simulations and experiments reveal a fact that shorter laser pulses are helpful to the electron-spin polarization. We therefore propose to use extremely-short laser pulses for electron-spin initialization. In this new scheme, the spin-state contrast could be improved about 10% in experiment by using laser pulses as short as 4 ns in width. Furthermore, we provide a mechanism to explain this effect which is due to the occupation time in the meta-stable spin-singlet states of N-V center. Our new scheme is applicable in a broad range of NV-based applications in the future." @default.
- W2994927203 created "2019-12-26" @default.
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- W2994927203 date "2019-12-12" @default.
- W2994927203 modified "2023-09-26" @default.
- W2994927203 title "Pulse-width-induced polarization enhancement of optically-pumped N-V electron spin in diamond" @default.
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- W2994927203 doi "https://doi.org/10.48550/arxiv.1912.06284" @default.
- W2994927203 hasPublicationYear "2019" @default.
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