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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Readout of superconducting nanowire single-photon detectors at high count rates
TL;DR: In this paper, a nonlinear interaction between the detector and its readout is identified, which makes stable, high-efficiency operation impossible at count rates even an order-of-magnitude less than
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Broadband on-chip single-photon spectrometer
TL;DR: The authors present a broadband, chip-scale spectrometer for measuring single photon wavelengths from 600 to 2000 nm with no moving parts, and features small device footprint, high robustness with noMoving parts and meanwhile offers more than 200 equivalent wavelength detection channels with further scalability.
Journal ArticleDOI
All-photonic intercity quantum key distribution.
TL;DR: This work presents a QKD protocol that could supersede even quantum repeaters for connectingQKD networks in different cities below 800 km distant, and uses only a single intermediate node with optical devices, requiring neither quantum memories nor quantum error correction.
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Superconducting nanowire detector jitters limited by detector geometry
TL;DR: In this paper, a differential cryogenic readout with less than 7 ps of electronic jitter that can amplify the pulses generated from the two ends of an SNSPD was proposed.
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Ultra‐fast heralded single photon source based on telecom technology
TL;DR: In this article, an ultra-fast source of heralded single photons emitted at the wavelength of 1540 nm is reported, where the single photons are heralded at a rate as high as 2.1 MHz with a heralding efficiency of 42%.
References
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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.