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arXiv 0712.3080physics.optics
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电信波长超导纳米线光子数分辨探测器

Superconducting nanowire photon number resolving detector at telecom wavelength

Aleksander Divochiy, Francesco Marsili, David Bitauld, Alessandro Gaggero, Roberto Leoni, Francesco Mattioli, Alexander Korneev, Vitaliy Seleznev, Nataliya Kaur… 展开作者

Aleksander Divochiy, Francesco Marsili, David Bitauld, Alessandro Gaggero, Roberto Leoni, Francesco Mattioli, Alexander Korneev, Vitaliy Seleznev, Nataliya Kaurova, Olga Minaeva, Gregory Goltsman, Konstantinos G. Lagoudakis, Moushab Benkhaoul, Francis Levy, Andrea Fiore

摘要:

光电转换是光学探测器的基础,可以是线性或非线性的。当需要高灵敏度时,使用单光子探测器(SPD),其在强非线性模式下操作,其响应与光子数无关。然而,光子数分辨(PNR)探测器是需要的,特别是在量子光学中,其中n光子态是常规产生的。在量子通信中,PNR功能是许多用于建立、交换和测量纠缠的协议的关键,并且可以用于检测光子数分裂攻击。具有单光子灵敏度的线性检测器也可以用于在极低的光水平下测量时间波形,例如在长距离光通信、荧光光谱、光时域反射测量中。我们在这里展示了一个PNR探测器的基础上平行超导纳米线和能够计数多达4个光子在电信波长,超低暗计数率和高计数频率。

英文摘要:

The optical-to-electrical conversion, which is the basis of optical detectors, can be linear or nonlinear. When high sensitivities are needed single-photon detectors (SPDs) are used, which operate in a strongly nonlinear mode, their response being independent of the photon number. Nevertheless, photon-number resolving (PNR) detectors are needed, particularly in quantum optics, where n-photon states are routinely produced. In quantum communication, the PNR functionality is key to many protocols for establishing, swapping and measuring entanglement, and can be used to detect photon-number-splitting attacks. A linear detector with single-photon sensitivity can also be used for measuring a temporal waveform at extremely low light levels, e.g. in long-distance optical communications, fluorescence spectroscopy, optical time-domain reflectometry. We demonstrate here a PNR detector based on parallel superconducting nanowires and capable of counting up to 4 photons at telecommunication wavelengths, with ultralow dark count rate and high counting frequency.

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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