High-efficiency WSi superconducting nanowire single-photon detectors for quantum state engineering in the near infrared

被引：37

作者：

Le Jeannic, Hanna ^{[1
]}

Verma, Varun B. ^{[2
]}

Cavailles, Adrien ^{[1
]}

Marsili, Francesco ^{[3
]}

Shaw, Matthew D. ^{[3
]}

Huang, Kun ^{[1
]}

Morin, Olivier ^{[4
]}

Nam, Sae Woo ^{[2
]}

Laurat, Julien ^{[1
]}

机构：

[1] PSL Res Univ, Sorbonne Univ, UPMC, Lab Kastler Brossel,CNRS,ENS,Coll France, 4 Pl Jussieu, F-75005 Paris, France

[2] NIST, 325 Broadway, Boulder, CO 80305 USA

[3] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[4] Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany

来源：

OPTICS LETTERS | 2016年 / 41卷 / 22期

基金：

欧洲研究理事会;

关键词：

SQUEEZED STATES; INFORMATION; GENERATION; OPTICS; LIGHT;

D O I：

10.1364/OL.41.005341

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on high-efficiency superconducting nanowire single-photon detectors based on amorphous tungsten silicide and optimized at 1064 nm. At an operating temperature of 1.8 K, we demonstrated a 93% system detection efficiency at this wavelength with a dark noise of a few counts per second. Combined with cavity-enhanced spontaneous parametric downconversion, this fiber-coupled detector enabled us to generate narrowband single photons with a heralding efficiency greater than 90% and a high spectral brightness of 0.6 x 10(4) photons/(s . mW . MHz). Beyond single-photon generation at large rate, such high-efficiency detectors open the path to efficient multiple-photon heralding and complex quantum state engineering. (C) 2016 Optical Society of America.

引用

页码：5341 / 5344

页数：4

共 41 条

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