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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Large-alphabet encoding for higher-rate quantum key distribution
Catherine Lee,Darius Bunandar,Zheshen Zhang,Gregory R. Steinbrecher,P. Benjamin Dixon,Franco N. C. Wong,Jeffrey H. Shapiro,Scott A. Hamilton,Dirk Englund +8 more
TL;DR: High-dimensional quantum key distribution capabilities are demonstrated both in the laboratory and over a deployed fiber, using photons encoded in a high-dimensional alphabet to increase the secure information yield per detected photon.
Journal ArticleDOI
Superconducting nanowire single photon detectors operating at temperature from 4 to 7 K.
Ronan Gourgues,Johannes W. N. Los,Julien Zichi,Jin Chang,Nima Kalhor,Gabriele Bulgarini,Sander N. Dorenbos,Val Zwiller,Iman Esmaeil Zadeh +8 more
TL;DR: This work experimentally investigates the performance of NbTiN superconducting nanowire single photon detectors above the base temperature of a conventional Gifford-McMahon cryocooler and shows that at temperatures up to 7 K, unity internal efficiency is maintained for the visible spectrum.
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NbRe as candidate material for fast single photon detection
TL;DR: In this article, the suitability of NbRe as a promising material for the design of superconducting single photon detectors is investigated in order to lower both the minimum detectable photon energy and the recovery time of the devices.
Journal ArticleDOI
Superconducting nanowire single-photon detector on dielectric optical films for visible and near infrared wavelengths
Lixing You,Lixing You,Hao Li,Hao Li,Weijun Zhang,Weijun Zhang,Xiaoyan Yang,Xiaoyan Yang,Lu Zhang,Lu Zhang,Sijing Chen,Sijing Chen,Hui Zhou,Hui Zhou,Zhen Wang,Zhen Wang,Xiaoming Xie,Xiaoming Xie +17 more
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Controlled integration of selected detectors and emitters in photonic integrated circuits
Ronan Gourgues,Iman Esmaeil Zadeh,Ali W. Elshaari,Gabriele Bulgarini,Johannes W. N. Los,Julien Zichi,Dan Dalacu,Philip J. Poole,Sander N. Dorenbos,Val Zwiller +9 more
TL;DR: A hybrid on-chip full-transceiver consisting of a deterministically integrated detector coupled to a selected nanowire quantum dot through a filtering circuit made of a silicon nitride waveguide and a ring resonator filter is demonstrated.
References
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Quantum Computing
Thaddeus D. Ladd,Fedor Jelezko,Raymond Laflamme,Yasunobu Nakamura,Christopher Monroe,Jeremy L. O'Brien +5 more
TL;DR: A number of physical systems, spanning much of modern physics, are being developed for this task, ranging from single particles of light to superconducting circuits, and it is not yet clear which, if any, will ultimately prove successful as discussed by the authors.
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Picosecond superconducting single-photon optical detector
Gregory Goltsman,O. Okunev,G. M. Chulkova,A. Lipatov,A. D. Semenov,Konstantin Smirnov,B. M. Voronov,A. Dzardanov,C. Williams,Roman Sobolewski +9 more
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
Nicolas Gisin,Rob Thew +1 more
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.