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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Development of high-effective superconducting single-photon detectors aimed for mid-IR spectrum range
P I Zolotov,Alexander Divochiy,Yu. B. Vakhtomin,P. V. Morozov,V. Seleznev,Konstantin Smirnov +5 more
Journal ArticleDOI
Memory-assisted quantum key distribution resilient against multiple-excitation effects
TL;DR: Two new variants of MA-QKD both relying on single-photon sources (SPSs) for entangling purposes are proposed, based on known techniques for entanglement distribution in quantum repeaters and shown to improve the rate-versus-distance behavior.
Journal ArticleDOI
Detector-decoy high-dimensional quantum key distribution
TL;DR: This paper proposes a detector-decoy high-dimensional quantum key distribution protocol that can promise the security under Gsussian collective attacks with much simpler operations in practical implementation, and shows that without varying the source intensity, this protocol performs much better than one- Decoy-state protocol and as well as the two-Decoy- state protocol in the infinite-size regime.
Proceedings ArticleDOI
Large-volume data delivery from low-Earth orbit to ground using efficient single-mode optical receivers
TL;DR: In this paper, the authors analyze the performance of such systems and discuss the performance gains that are enabled by coupling the received signal to an efficient singlemode-fiber-based receiver, even in the presence of turbulence induced losses.
Journal ArticleDOI
Engineering of near-IR photon pairs to be factorable in space-time and entangled in polarization.
TL;DR: It is shown experimentally that a source based on the process of spontaneous parametric downconversion can be configured for the generation of pure heralded single photons and polarization-entangled photon pairs which are free from spectral correlations, in both cases without resorting to spectral filtering.
References
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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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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.