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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Multi-mode Time-delay Interferometer for Free-space Quantum Communication.
TL;DR: In this article, a multi-mode, Michelson-type time-delay interferometer using a field-widened design for the measurement of phase-encoded states in free-space communication schemes is presented.
Journal ArticleDOI
Effect of buffer layer on thermal recovery of superconducting nanowire single-photon detector
T Xu,Shi Chen,H K Shi,Xiaoqing Jia,Labao Zhang,Qing-Yuan Zhao,Xuecou Tu,Lina Kang,Jinfei Chen,P. H. Wu +9 more
Journal ArticleDOI
High sensitivity optical communication based on single-photon detection polarized pulse position modulation
TL;DR: In this paper, a high sensitivity optical communication system with 4 superconducting nanowire single-photon detectors was demonstrated, where a coding method is invented based on the polarized pulse position modulation (PPM), which increases the capability of suppressing the background and increases the information of each photon pulse by 50%.
Journal ArticleDOI
Fuzzy Greenberger-Horne-Zeilinger state analyzer and multiparty measurement-device-independent quantum key distribution network
TL;DR: This proposed multiparty measurement-device-independent quantum key distribution protocol based on a fuzzy GHZ state analyzer, which is composed of linear optical components, needs less optical components and detectors, is easier to extend more users, and narrows the gap between theory and practice in multiparty MDI-QKD network.
Proceedings ArticleDOI
Binary polarization-shift-keyed modulation for interplanetary CubeSat optical communications
TL;DR: In this article, a binary polarization-shift-keyed modulation scheme using dual gain-switched diode lasers is developed and demonstrated within an end-to-end link testbed to achieve signal acquisition under extremely poor signal-tonoise conditions.
References
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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.