期刊
PHYSICAL REVIEW LETTERS
卷 114, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.136402
关键词
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资金
- NSF
- CUA
- HQOC
- DARPA QuASAR program
- ARO MURI
- AFOSR MURI
- Moore Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1521560, 1125846] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [0969816, 1205635, 1205923] Funding Source: National Science Foundation
Efficient readout of individual electronic spins associated with atomlike impurities in the solid state is essential for applications in quantum information processing and quantum metrology. We demonstrate a new method for efficient spin readout of nitrogen-vacancy (NV) centers in diamond. The method is based on conversion of the electronic spin state of the NV to a charge-state distribution, followed by single-shot readout of the charge state. Conversion is achieved through a spin-dependent photoionization process in diamond at room temperature. Using NVs in nanofabricated diamond beams, we demonstrate that the resulting spin readout noise is within a factor of 3 of the spin projection noise level. Applications of this technique for nanoscale magnetic sensing are discussed.
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