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arXiv 1701.07040quant-ph
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利用半导体量子点光同时全面表征单光子态

Simultaneous, full characterization of a single-photon state using semiconductor quantum-dot light

Tim Thomay, Sergey V. Polyakov, Olivier Gazzano, Elizabeth Goldschmidt, Vivien Loo, Glenn S. Solomon

摘要:

随着单光子源越来越成熟,并且在量子信息、通信和测量应用中使用得越来越频繁,其表征变得越来越重要。类单光子光通常以其亮度和两个量子特性为特征:单光子组成和光子不可逆性。虽然期望从单次测量获得这些量,但目前需要两次或更多次测量。在这里,我们同时确定亮度,单光子纯度,不可逆性,和Fock态的统计分布的三阶量子光源。测量使用一对双光子(n = 2)数分辨探测器。n > 2的数分辨探测器在单光子表征中没有提供额外的优点。新方法提取更多的信息,每个实验试验比传统的测量所有的输入状态,特别是更有效的统计混合的光子状态。因此,使用该n=2的数分辨检测器方案将在各种量子光学测量和系统中提供优点。

英文摘要:

As single-photon sources become more mature and are used more often in quantum information, communications and measurement applications, their characterization becomes more important. Single-photon-like light is often characterized by its brightness, and two quantum properties: the single-photon composition and the photon indistinguishability. While it is desirable to obtain these quantities from a single measurement, currently two or more measurements are required. Here, we simultaneously determine the brightness, the single photon purity, the indistinguishability, and the statistical distribution of Fock states to third order for a quantum light source. The measurement uses a pair of two-photon (n = 2) number-resolving detectors. n > 2 number-resolving detectors provide no additional advantage in the single-photon characterization. The new method extracts more information per experimental trial than a conventional measurement for all input states, and is particularly more e cient for statistical mixtures of photon states. Thus, using this n=2, number- resolving detector scheme will provide advantages in a variety of quantum optics measurements and systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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