High-speed and high-efficiency superconducting nanowire single photon detector array

被引：172

作者：

Rosenberg, D. ^{[1
]}

Kerman, A. J. ^{[1
]}

Molnar, R. J. ^{[1
]}

Dauler, E. A. ^{[1
]}

机构：

[1] MIT, Lincoln Lab, Lexington, MA 02420 USA

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 02期

关键词：

Commerce - Nanowires - Efficiency - Avalanche photodiodes - Particle beams;

D O I：

10.1364/OE.21.001440

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Superconducting nanowire single photon detectors (SNSPDs) have separately demonstrated high efficiency, low noise, and extremely high speed when detecting single photons. However, achieving all of these simultaneously has been limited by detector subtleties and tradeoffs. Here, we report an SNSPD system with <80 ps timing resolution, kHz noise count rates, and 76% fiber-coupled system detection efficiency in the low-flux limit at 1550 nm. We present a model for determining the detection efficiency penalty due to the detection recovery time, and we validate our method using experimental data obtained at high count rates. We demonstrate improved performance tradeoffs, such as 68% system detection efficiency, including losses due to detector recovery time, when coupled to a Poisson source emitting 100 million photons per second. Our system can provide limited photon number resolution, continuous cryogen-free operation, and scalability to future imaging and GHz-count-rate applications. (C) 2012 Optical Society of America

引用

页码：1440 / 1447

页数：8

共 22 条

[1] Device-independent security of quantum cryptography against collective attacks [J].