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Open AccessJournal ArticleDOI

Detecting single infrared photons with 93% system efficiency

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.

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Citations
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Journal ArticleDOI

High-efficiency single-photon generation via large-scale active time multiplexing

TL;DR: In this article, a large-scale time multiplexed single-photon sources (HSPSs) were demonstrated to achieve state-of-the-art performance for large scale optical quantum information and communication applications.
Journal ArticleDOI

Deterministic and robust generation of single photons from a single quantum dot with 99.5% indistinguishability using adiabatic rapid passage

TL;DR: Deterministic and robust generation of pulsed resonance fluorescence single photons from a single semiconductor quantum dot using adiabatic rapid passage is demonstrated, reaching a precision that places single photons at the threshold for fault-tolerant surface-code quantum computing.
Journal ArticleDOI

Single-photon imager based on a superconducting nanowire delay line

TL;DR: In this paper, a superconducting nanowire acting as a single-photon detector and as a microwave delay line is used to demonstrate an imaging device at the singlephoton level with sub-20-µm spatial resolution and 50-ps temporal resolution.
References
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Journal ArticleDOI

Quantum Computing

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

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, +1 more
- 27 Mar 2007 - 
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.
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