Optically probing the detection mechanism in a molybdenum silicide superconducting nanowire single-photon detector

被引：36

作者：

Caloz, Misael ^{[1
]}

Korzh, Boris ^{[1
]}

Timoney, Nuala ^{[1
]}

Weiss, Markus ^{[2
]}

Gariglio, Stefano ^{[3
]}

Warburton, Richard J. ^{[2
]}

Schoenenberger, Christian ^{[2
]}

Renema, Jelmer ^{[4
]}

Zbinden, Hugo ^{[1
]}

Bussieres, Felix ^{[1
]}

机构：

[1] Univ Geneva, Appl Phys Grp, Chemin Pinchat 22, CH-1211 Geneva 4, Switzerland

[2] Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland

[3] Univ Geneva, Dept Quantum Matter Phys, 24 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland

[4] Univ Oxford, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England

来源：

APPLIED PHYSICS LETTERS | 2017年 / 110卷 / 08期

关键词：

EFFICIENCY;

D O I：

10.1063/1.4977034

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We experimentally investigate the detection mechanism in a meandered molybdenum silicide superconducting nanowire single-photon detector by characterising the detection probability as a function of bias current in the wavelength range of 750-2050 nm. Contrary to some previous observations on niobium nitride or tungsten silicide detectors, we find that the energy-current relation is nonlinear in this range. Furthermore, thanks to the presence of a saturated detection efficiency over the whole range of wavelengths, we precisely quantify the shape of the curves. This allows a detailed study of their features, which are indicative of both Fano fluctuations and position-dependent effects. Published by AIP Publishing.

引用

页数：4

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