Detecting single infrared photons with 93% system efficiency
Francesco Marsili,Varun B. Verma,Jeffrey A. Stern,Sean D. Harrington,Adriana E. Lita,Thomas Gerrits,Igor Vayshenker,Burm Baek,M. D. Shaw,Richard P. Mirin,Sae Woo Nam +10 more
TLDR
In this article, a fiber-coupled single-photon detection system using amorphous tungsten silicide superconducting nanowire detectors was developed, and the system detection efficiency was higher than 90% in the wavelength range between 1520 nm and 1610 nm.Abstract:
Researchers develop a fiber-coupled single-photon-detection system using amorphous tungsten silicide superconducting nanowire single-photon detectors. The system detection efficiency is higher than 90% in the wavelength range between 1520 nm and 1610 nm. The device dark-count rate, timing jitter and reset time are 1 cps, 150 ps and 40 ns, respectively.read more
Citations
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Operation of parallel SNSPDs at high detection rates
Matthieu Perrenoud,Misael Caloz,Emna Amri,Claire Autebert,Christian Schönenberger,Hugo Zbinden,Félix Bussières +6 more
TL;DR: In this article, the authors show that cross-talk between parallel nanowires typically leads to latching, which prevents high detection rates, and they show how this problem can be avoided through a careful design of the whole SNSPD structure.
Journal ArticleDOI
Demonstration of Microwave Multiplexed Readout of DC-Biased Superconducting Nanowire Detectors
Adrian Sinclair,Edward Schroeder,Di Zhu,Marco Colangelo,Jon Glasby,Philip Daniel Mauskopf,Hamdi Mani,Karl K. Berggren +7 more
TL;DR: In this paper, a dc-biased superconducting nanowire single photon detector with a microwave multiplexing circuit is presented. But the performance of the dc bias line is not evaluated.
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Superconducting-superconducting hybridization for enhancing single-photon detection
Yachin Ivry,Jonathan J. Surick,Maya Barzilay,Chung-Soo Kim,Faraz Najafi,Estelle Kalfon-Cohen,Andrew D. Dane,Karl K. Berggren +7 more
TL;DR: In this paper, a hybrid superconducting nanowire single photon detectors (SNSPDs) made of 2-nm-thick W5Si3 and amorphous NbN was proposed.
Journal ArticleDOI
Multispectral superconducting nanowire single photon detector
Hao Li,Heqing Wang,Lixing You,Peng Hu,Shen Weidong,Weijun Zhang,Xiaoyan Yang,Lu Zhang,Hui Zhou,Zhen Wang,Xiaoming Xie +10 more
TL;DR: The multispectral superconducting nanowire single photon detectors that can simultaneously detect single photons at multiple wavelengths with high efficiency are reported, potentially resulting in a reduction in size, weight, and power, as well as in the cost of the overall detection system.
References
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TL;DR: In this article, a supercurrent-assisted hotspot-formation mechanism for ultrafast detection and counting of visible and infrared photons is presented, where a photon-induced hotspot leads to a temporary formation of a resistive barrier across the superconducting sensor strip and results in an easily measurable voltage pulse.
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Quantum Communication
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TL;DR: The current state of research and future directions in quantum key distribution and quantum networks are reviewed in this paper, with a special emphasis on quantum key distributions and quantum key sharing in quantum networks.
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Invited review article: Single-photon sources and detectors
TL;DR: The current status of single-photon-source and single-Photon-detector technologies operating at wavelengths from the ultraviolet to the infrared are reviewed and applications of these technologies to quantum communication are discussed.