%0 Journal Article
%T Superconducting nanowire photon-number-resolving detector at telecommunication wavelengths
%A Divochiy, Aleksander
%A Marsili, Francesco
%A Bitauld, David
%A Gaggero, Alessandro
%A Leoni, Roberto
%A Mattioli, Francesco
%A Korneev, Alexander
%A Seleznev, Vitaliy
%A Kaurova, Nataliya
%A Minaeva, Olga
%A Gol'tsman, Gregory
%A Lagoudakis, Konstantinos G.
%A Benkhaoul, Moushab
%A Lévy, Francis
%A Fiore, Andrea
%J Nat. Photon.
%D 2008
%V 2
%N 5
%F Divochiy_etal2008
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=916), last updated on Sat, 01 May 2021 01:13:28 -0500
%X Optical-to-electrical conversion, which is the basis of the operation of optical detectors, can be linear or nonlinear. When high sensitivities are needed, single-photon detectors are used, which operate in a strongly nonlinear mode, their response being independent of the number of detected photons. However, photon-number-resolving detectors are needed, particularly in quantum optics, where n-photon states are routinely produced. In quantum communication and quantum information processing, the photon-number-resolving functionality is key to many protocols, such as the implementation of quantum repeaters1 and linear-optics quantum computing2. A linear detector with single-photon sensitivity can also be used for measuring a temporal waveform at extremely low light levels, such as in long-distance optical communications, fluorescence spectroscopy and optical time-domain reflectometry. We demonstrate here a photon-number-resolving detector based on parallel superconducting nanowires and capable of counting up to four photons at telecommunication wavelengths, with an ultralow dark count rate and high counting frequency.
%K SSPD
%K photon-number-resolving
%R 10.1038/nphoton.2008.51
%U http://www.nature.com/nphoton/journal/v2/n5/full/nphoton.2008.51.html
%U https://doi.org/10.1038/nphoton.2008.51
%P 302-306