TY - JOUR AU - Divochiy, Aleksander AU - Marsili, Francesco AU - Bitauld, David AU - Gaggero, Alessandro AU - Leoni, Roberto AU - Mattioli, Francesco AU - Korneev, Alexander AU - Seleznev, Vitaliy AU - Kaurova, Nataliya AU - Minaeva, Olga AU - Gol'tsman, Gregory AU - Lagoudakis, Konstantinos G. AU - Benkhaoul, Moushab AU - Lévy, Francis AU - Fiore, Andrea PY - 2008 DA - 2008// TI - Superconducting nanowire photon-number-resolving detector at telecommunication wavelengths T2 - Nat. Photon. JO - Nat. Photon. SP - 302 EP - 306 VL - 2 IS - 5 KW - SSPD KW - photon-number-resolving AB - 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. UR - http://www.nature.com/nphoton/journal/v2/n5/full/nphoton.2008.51.html UR - https://doi.org/10.1038/nphoton.2008.51 DO - 10.1038/nphoton.2008.51 N1 - exported from refbase (https://db.rplab.ru/refbase/show.php?record=916), last updated on Sat, 01 May 2021 01:13:28 -0500 ID - Divochiy_etal2008 ER -