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
Performances of NbTiN superconducting nanowire single photon detector
TL;DR: In this article, a fiber-coupled niobium titanium nitride superconducting nanowire single photon detector was fabricated on thermally oxidized silicon substrates.
Proceedings ArticleDOI
Single- and multi-photon counting using an array of SNSPDs
Alessandro Gaggero,Fabio Chiarello,M. Elviretti,M. Graziosi,Francesco Mattioli,Guido Torrioli,Roberto Leoni +6 more
TL;DR: The design, fabrication and electro-optical characterization of a pulse-position-resolving detector based on the spatial multiplexing of four superconducting nanowire avalanche photodiodes connected in series is reported on.
Journal ArticleDOI
Copper Encapsulated Ultra-Thin NbN Films and Damascene Structures on 300 mm Si Wafers
TL;DR: In this article , the development of reactively sputtered ultra-thin niobium nitride (NbN) films and their fabrication into patterned structures using 193 nm optical lithography on 300 mm scale is presented.
Dissertation
Optical properties of ultra-thin niobium nitride films for single photon detectors
TL;DR: Berggren et al. as discussed by the authors made a study of the properties of reactively sputtered ultra-thin films of Niobium nitride (NbN) and niobium titanium nitride, and found that the optical properties of NbN films appear to have a critical thickness above which the optical parameters stabilize.
Proceedings ArticleDOI
Quantum Detector Tomography on Superconducting Single Photon Detectors
Jelmer J. Renema,Rosalinda Gaudio,Qiang Wang,Zili Zhou,Alessandro Gaggero,Dondu Sahin,M. J. A. de Dood,Andrea Fiore,M. P. van Exter +8 more
TL;DR: In this article, the authors used quantum detector tomography (QDT) to investigate the physics of photodetection in superconducting single photon detectors and achieved the key promise of QDT: agnostic, model-free investigation of an unknown detector.
References
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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.