Photon-number-resolving detection using time-multiplexing

Authors: Daryl Achilles1; Christine Silberhorn1; Cezary Sacuteliwa1; Konrad Banaszek1; Ian A. Walmsley1; Michael J. Fitch2; Bryan C. Jacobs2; Todd B. Pittman2; James D. Franson2

Source: Journal of Modern Optics, Volume 51, Numbers 9-10, 15 June-10 July 2004 , pp. 1499-1515(17)

Publisher: Taylor and Francis Ltd

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Abstract:

Detectors that can resolve photon number are needed in many quantum information technologies. In order to be useful in quantum information processing, such detectors should be simple, easy to use, and be scalable to resolve any number of photons, as the application may require great portability such as in quantum cryptography. Here we describe the construction of a time-multiplexed detector, which uses a pair of standard avalanche photodiodes operated in Geiger mode. The detection technique is analysed theoretically and tested experimentally using a pulsed source of weak coherent light.

Document Type: Research article

DOI: 10.1080/09500340410001670875

Affiliations: 1: Clarendon Laboratory University of Oxford Oxford OX1 3PU UK 2: Applied Physics Laboratory Johns Hopkins University Laurel MD 20723-6099 USA

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