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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Superconducting nanowire single photon detector
TL;DR: In this paper, a superconducting nanowire single photon detector is proposed, which consists of a number of straight line parts which are arranged in parallel and with spacing, and a first connection part which connects the straight line part in order from end to end.
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Integrated-photonic characterization of single-photon detectors for use in neuromorphic synapses
Sonia Buckley,Alexander N. Tait,Jeff Chiles,Adam N. McCaughan,Saeed Khan,Richard P. Mirin,Sae Woo Nam,Jeffrey M. Shainline +7 more
TL;DR: The utility of the detectors for use in synapses in spiking neural systems is assessed, indicating that synaptic responses based on these detectors will be independent of the number of incident photons in a communication pulse.
Journal ArticleDOI
Miniaturized high-frequency sine wave gating InGaAs/InP single-photon detector
Wen-Hao Jiang,Xin-Jiang Gao,Yu-Qiang Fang,Jian-Hong Liu,Yong Zhou,Jiang Liqun,Wei Chen,Ge Jin,Jun Zhang,Jian-Wei Pan +9 more
TL;DR: This work designs and fabricates an InGaAs/InP single-photon avalanche diode (SPAD) with optimized semiconductor structure, and implements a monolithic readout circuit for the SWG SPD in order to replace the quenching electronics that is previously designed with board-level integration.
Journal ArticleDOI
High-efficiency WSi superconducting nanowire single-photon detectors operating at 2.5 K
Varun B. Verma,Boris Korzh,Félix Bussières,Robert D. Horansky,Adriana E. Lita,Francesco Marsili,M. D. Shaw,Hugo Zbinden,Richard P. Mirin,Sae Woo Nam +9 more
TL;DR: In this paper, the authors investigated the operation of WSi single-photon detectors at 2.5 K, a temperature which is ~ 70 % of the superconducting transition temperature (TC) of 3.4 K.
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A countermeasure against bright-light attack on superconducting nanowire single-photon detector in quantum key distribution
TL;DR: Although the system detects continuous blinding, the detector is shown to be partially blindable and controllable by specially tailored sequences of bright pulses, suggesting improvements to the countermeasure are suggested.
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.