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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Proceedings ArticleDOI
Bandwidth-enhanced superconducting nanowire single photon detectors for telecom wavelengths
TL;DR: In this paper, a single-photon detector for optical impedance matching is presented, which provides system detection efficiencies of at least (86.7 ± 0.9) % from 1450 nm to 1640 nm.
Journal ArticleDOI
Quantum enhanced estimation of optical detector efficiencies
Marco Barbieri,Animesh Datta,Tim J. Bartley,Xian-Min Jin,W. Steven Kolthammer,Ian A. Walmsley +5 more
TL;DR: In this article, a crossover in the nature of the optimal probe state was identified for estimating detector imperfections as a function of the loss parameter using Fisher information as a benchmark, and theoretical results for on-off and homodyne detectors, the most widely used detectors in quantum photonics technologies, when using Fock states and coherent states as probes.
Journal ArticleDOI
Experimental Demonstration of Superconducting Series Nanowire Photon-Number-Resolving Detector at 660 nm Wavelength
Ruiying Xu,Xu Tao,Qi Chen,Xiang Li,Guanghao Zhu,Lin Kang,Labao Zhang,Xiaoqing Jia,Xuecou Tu,Qing-Yuan Zhao,Biaobing Jin,Weiwei Xu,Jian Chen,Peiheng Wu +13 more
TL;DR: In this paper, a superconducting photon-number-resolving detector operating at the visible wavelength regime, based on the serial connection of six super-conducting nanowires, is presented.
Proceedings ArticleDOI
Critical current and electric transport properties of superconducting epitaxial Nb(Ti)N submicron structures
A. Klimov,Wojciech Słysz,M. Guziewicz,V. Kolkovsky,M. Wegrzecki,Jan Bar,Michał Marchewka,Bartłomiej Seredyński +7 more
TL;DR: In this article, critical current and currentvoltage characteristics of epitaxial Nb(Ti)N submicron ultrathin structures were measured as function of temperature, and they demonstrated high depairing critical current densities ~107 A/cm2 at low temperatures.
Journal ArticleDOI
Superconducting niobium nitride: a perspective from processing, microstructure, and superconducting property for single photon detectors
Nicholas Cucciniello,Der‐Sun Lee,Henry Y Feng,Zihao Yang,Hao Zeng,N. Patibandla,Mingwei Zhu,Quanxi Jia +7 more
TL;DR: In this article , the authors describe the processing-structure-property relationships governing the superconducting properties of NbN films and discuss the complex interplay between the material properties, processing parameters, substrate materials, device architectures, and performance of SNSPDs.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.