Optical manipulation of the charge state of nitrogen-vacancy center in diamond

被引：59
|
作者：
Chen, Xiang-Dong [1 ]
Zou, Chang-Ling [1 ]
Sun, Fang-Wen [1 ]
Guo, Guang-Can [1 ]
机构：
[1] Univ Sci & Technol China, Key Lab Quantum Informat, Hefei 230026, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Excited states - Particle beams - Nitrogen - Photons;
D O I：
10.1063/1.4813120
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The conversion between two nitrogen vacancy (NV) center charge states (NV0 and NV-) was experimentally studied with laser in the range from 378 to 492 nm. The wavelength and power dependent charge state conversion was proved to be single-photon process at short wavelength and two-photon process at long wavelength. Also, the presence of metastable state in NV- significantly affected the conversion process, which can be used to increase NV- population from 72.5% to 80.5% by applying a magnetic field under 532nm excitation. The method can be used for improving the fidelity of charge state polarization and subsequently optimizing the quantum control with NV center and resolution in the magnetometric and biological sensoring. (C) 2013 AIP Publishing LLC.
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页数：4
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