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Quantum transduction of telecommunications-band single photons from a quantum dot by frequency upconversion

080500226 添加于 2010-10-20 08:37 | 2594 次阅读 | 0 个评论

作者
Rakher MT, Ma L, Slattery O, Tang X, Srinivasan K
摘要
Transducing non-classical states of light from one wavelength to another is required for integrating disparate quantum systems that take advantage of telecommunications-band photons for optical-fibre transmission of quantum information and near-visible, stationary systems for manipulation and storage. In addition, transducing a single-photon source at 1.3 µm to visible wavelengths would be integral to linear optical quantum computation because of near-infrared detection challenges. Recently, transduction at single-photon power levels has been accomplished through frequency upconversion, but it has yet to be demonstrated for a true single-photon source. Here, we transduce triggered single photons from a semiconductor quantum dot at 1.3 µm to 710 nm with 21% (75%) total detection (internal conversion) efficiency. We demonstrate that the upconverted signal maintains the quantum character of the original light, yielding a second-order intensity correlation, g(2)(τ), that shows that the optical field is composed of single photons with g(2)(0) = 0.165 < 0.5.
详细资料
- 文献种类:期刊
- 期刊名称: Nature Photonics
- 期刊缩写: Nature Photon
- 期卷页: 2010年
- ISBN: 1749-4885
标签

Optical fibre-based collection of quantum dot emission
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