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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Entanglement-based linear-optical qubit amplifier
Evan Meyer-Scott,Marek Bula,Karol Bartkiewicz,Antonín Černoch,Jan Soubusta,Thomas Jennewein,Karel Lemr +6 more
TL;DR: In this article, a linear-optical scheme for an efficient amplification of a photonic qubit based on interaction of the signal mode with a pair of entangled ancillae was proposed.
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Experimental few-copy multipartite entanglement detection
Valeria Saggio,Aleksandra Dimić,Chiara Greganti,Lee A. Rozema,Philip Walther,Borivoje Dakić,Borivoje Dakić +6 more
TL;DR: In this paper, the authors developed a generic framework for efficient entanglement detection, which translates any entangler witness into a resource-efficient probabilistic scheme, whose confidence grows exponentially with the number of individual detection events, namely copies of the quantum state.
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Experimental realization of an optical antenna designed for collecting 99% of photons from a quantum emitter
Xiao-Liu Chu,Thomas J. K. Brenner,Xue-Wen Chen,Yagnaseni Ghosh,Jennifer A. Hollingsworth,Vahid Sandoghdar,Stephan Götzinger +6 more
TL;DR: In this paper, an optical antenna designed to convert the dipolar radiation of an arbitrarily oriented quantum emitter to a directional beam with more than 99% efficiency is presented, which can be used for more efficient detection of nanoscopic emitters ranging from semiconductor quantum dots to dye molecules, color centers, or rare earth ions in various environments.
Journal ArticleDOI
Photon counting LIDAR at 2.3µm wavelength with superconducting nanowires
Gregor G. Taylor,Dmitry Morozov,Nathan R. Gemmell,Kleanthis Erotokritou,Shigehito Miki,Hirotaka Terai,Robert H. Hadfield +6 more
TL;DR: This work shows a proof-of-principle benchtop single-photon light detection and ranging (LIDAR) depth imager at 2.3µm, utilizing superconducting nanowire single-Photon detectors (SNSPDs) and fabricate and fiber-couple SNSPDs to exhibit enhanced photon counting performance in the mid-infrared.
Journal ArticleDOI
InAs quantum dots grown on metamorphic buffers as non-classical light sources at telecom C-band: a review
TL;DR: In this paper, the authors discuss the current state-of-the-art in the generation of non-classical photons, comparing the properties and performances of MMB-based results with other competing quantum dot (QD) platforms.
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.