@Article{Divochiy_etal2008, author="Divochiy, Aleksander and Marsili, Francesco and Bitauld, David and Gaggero, Alessandro and Leoni, Roberto and Mattioli, Francesco and Korneev, Alexander and Seleznev, Vitaliy and Kaurova, Nataliya and Minaeva, Olga and Gol{\textquoteright}tsman, Gregory and Lagoudakis, Konstantinos G. and Benkhaoul, Moushab and L{\'e}vy, Francis and Fiore, Andrea", title="Superconducting nanowire photon-number-resolving detector at telecommunication wavelengths", journal="Nat. Photon.", year="2008", volume="2", number="5", pages="302--306", optkeywords="SSPD; photon-number-resolving", abstract="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.", optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=916), last updated on Sat, 01 May 2021 01:13:28 -0500", doi="10.1038/nphoton.2008.51", opturl="http://www.nature.com/nphoton/journal/v2/n5/full/nphoton.2008.51.html", opturl="https://doi.org/10.1038/nphoton.2008.51" }