基于 NbRe 超薄薄膜的一对平行微带的单光子探测能力可达 2 um

C. Cirillo, M. Ejrnaes, P. Ercolano, C. Bruscino, A. Cassinese, D. Salvoni, C. Attanasio, G. P. Pepe, L. Parlato
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引用次数: 0

摘要

超导微带单光子探测器(SMSPD)作为大面积探测器的新平台,在制造方面具有前所未有的优势,正日益吸引科学界的兴趣。然而,虽然其在电信波长上的工作能力已经实现,但要在 1.55 um 以上的波长上工作仍具有挑战性。在这里,我们通过实验演示了掺钕铼微带在 1.55 和 2 微米波长下的单光子工作原理。该器件的结构是一对平行微带,宽度为 1.4 至 2.2 微米,长度为 5 至 10 微米。这种创新设计可以保证大的敏感区域,而不影响动感,即探测器的时间性能。研究结果将在热点双温模型框架内进行讨论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Single photon detection up to 2 um in pair of parallel microstrips based on NbRe ultrathin films
Superconducting Microstrip Single Photon Detectors (SMSPDs) are increasingly attracting the interest of the scientific community as a new platform for large area detectors with unprecedented advantaged in terms of fabrication. However, while their operativity at the telecommunication wavelength was achieved, working beyond 1.55 um is challenging. Here, we experimentally demonstrate single-photon operation of NbRe microstrips at wavelengths of 1.55 and 2 um. The devices are structured as pairs of parallel microstrips with widths ranging from 1.4 to 2.2 um and lengths from 5 to 10 um. This innovative design may assure large sensitive areas, without affecting the kinetic inductance, namely the time performance of the detectors. The results are discussed in the framework of the hot-spot two-temperature model.
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