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篇名
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Quantum transduction of telecommunicationsband single photons from a quantum dot by frequency upconversion
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刊名
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Nature Photonics
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作者
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Matthew T. Rakher, Lijun Ma, Oliver Slattery, Xiao Tang and Kartik Srinivasan
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DOI
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10.1038/NPHOTON.2010.221
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日期
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2010-10-3
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摘要
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Transducing non-classical states of light from one wavelength to another is required for integrating disparate quantumsystems 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 mm 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 mm 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)(t), that shows that the optical field is composed of single photons with g(2)(0)50.165 < 0.5.
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供稿
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王兵
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Quantum transduction of telecommunicationsband single photons from a quantum dot by frequency upconversion
