期刊
NANO LETTERS
卷 21, 期 16, 页码 6960-6966出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c02250
关键词
nitrogen-vacancy centers; silicon-vacancy centers; diamond; charge dynamics; charge carrier transport; charge carrier capture; quantum sensing
类别
资金
- U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES) [DE-SC0020313]
- U.S. Department of Energy at Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- ANID Fondecyt [1180673]
- ANID PIA [ACT192023]
- Universidad Mayor
- Department of Defense through the National Defense Science and Engineering Graduate Fellowship (NDSEG) program
- U.S. Department of Energy (DOE) [DE-SC0020313] Funding Source: U.S. Department of Energy (DOE)
The control over charge states of color centers in solids is crucial for quantum technologies, but the microscopic charge dynamics of deep defects remain complex and unknown. By utilizing single-shot charge-state readout of an individual nitrogen-vacancy (NV) center, researchers were able to probe the charge dynamics of surrounding defects in diamond and demonstrate the charge conversion ability of optical illumination in capturing holes. This study sheds light on the importance of charge carrier generation, transport, and capture in quantum device design with color centers, offering a novel approach to probe and control charge dynamics in diamond.
Control over the charge states of color centers in solids is necessary to fully utilize them in quantum technologies. However, the microscopic charge dynamics of deep defects in wide-band-gap semiconductors are complex, and much remains unknown. We utilize a single-shot charge-state readout of an individual nitrogen-vacancy (NV) center to probe the charge dynamics of the surrounding defects in diamond. We show that the NV center charge state can be converted through the capture of holes produced by optical illumination of defects many micrometers away. With this method, we study the optical charge conversion of silicon-vacancy (SiV) centers and provide evidence that the dark state of the SiV center under optical illumination is SiV2-. These measurements illustrate that charge carrier generation, transport, and capture are important considerations in the design and implementation of quantum devices with color centers and provide a novel way to probe and control charge dynamics in diamond.
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