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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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Journal ArticleDOI

Sequential generation of linear cluster states from a single photon emitter

TL;DR: This work employs a single entangling-gate in a fiber loop configuration to sequentially entangle an ever-growing stream of photons originating from the currently most efficient single-photon source technology—a semiconductor quantum dot.
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NbTiN thin films for superconducting photon detectors on photonic and two-dimensional materials

TL;DR: In this paper, superconducting strip photon detectors were fabricated using a design suitable for waveguide integration and compared in terms of their internal quantum efficiency and detection pulse kinetics, while also demonstrating that reactive co-sputter deposition of NbTiN at room temperature provides a robust method for realizing superconducted devices on various materials.
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Interfacing scalable photonic platforms: solid-state based multi-photon interference in a reconfigurable glass chip

TL;DR: In this article, the temporal train of single photons obtained from a quantum emitter is used to generate a 3.8×103 −1 three-photon source, which is then sent to the input of a tunable tritter circuit, demonstrating the on-chip quantum interference of three indistinguishable single photons.
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Improved light-matter interaction for storage of quantum states of light in a thulium-doped crystal cavity

TL;DR: In this article, an atomic frequency comb quantum memory for 793-nm wavelength photons using a monolithic cavity based on a thulium- (Tm-) doped crystal was proposed.
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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