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arXiv 1203.5477physics.ins-detphysics.opticsquant-ph
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基于超导纳米线串联阵列的光子数分辨探测器

Photon-number resolving detector based on a series array of superconducting nanowires

Saeedeh Jahanmirinejad, Giulia Frucci, Francesco Mattioli, Dondu Sahin, Alessandro Gaggero, Roberto Leoni, Andrea Fiore

摘要:

本文介绍了超导光子数分辨探测器的实验演示。它基于N个超导纳米线的串联,每个纳米线并联连接到集成电阻器。该装置提供了一个单一的电压读数,与不同纳米线吸收的光子数成比例。用GaAs衬底上的NbN薄膜制成的四元件探测器,在探测n=1-4个光子时,观察到了清晰分离的输出能级,在1300 nm波长处,单光子系统量子效率为2.6%。串联纳米线结构是有前途的,鉴于其可扩展性,大光子数和高效率。

英文摘要:

We present the experimental demonstration of a superconducting photon number resolving detector. It is based on the series connection of N superconducting nanowires, each connected in parallel to an integrated resistor. The device provides a single voltage readout, proportional to the number of photons absorbed in distinct nanowires. Clearly separated output levels corresponding to the detection of n=1-4 photons are observed in a 4-element detector fabricated from an NbN film on GaAs substrate, with a single-photon system quantum efficiency of 2.6% at the wavelength of 1300nm. The series-nanowire structure is promising in view of its scalability to large photon numbers and high efficiencies.

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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