期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.107401
关键词
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资金
- NCCR QSIT
- BMBF QuaHL-Rep [01BQ1035]
- EPSRC
- Royal Society
- [DFG-SPP1285]
- Engineering and Physical Sciences Research Council [EP/G02216X/1, EP/I023186/1] Funding Source: researchfish
- EPSRC [EP/I023186/1, EP/G02216X/1] Funding Source: UKRI
We probe local charge fluctuations in a semiconductor via laser spectroscopy on a nearby self-assembled quantum dot. We demonstrate that the quantum dot is sensitive to changes in the local environment at the single-charge level. By controlling the charge state of localized defects, we are able to infer the distance of the defects from the quantum dot with +/- 5 nm resolution. The results identify and quantify the main source of charge noise in the commonly used optical field-effect devices.
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