Experimental realization of a nondeterministic optical noiseless amplifier

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Title Experimental realization of a nondeterministic optical noiseless amplifier
Author Ferreyrol, Franck Michel; Blandino, Rémi; Barbieri, Marco; Tualle-Brouri, Rosa; Grangier, Philippe
Journal Name Physical Review A
Year Published 2011
Place of publication United States
Publisher American Physical Society
Abstract Linear amplifiers are necessarily affected by a minimal amount of noise, which is needed in order to preserve the linearity and the unitarity prescribed by quantum mechanics. Such a limitation might be partially overcome if the process is realized by conditioning its operation on a trigger event, for instance, the result of a measurement. Here we present a detailed analysis of a noiseless amplifier, implemented using linear optics, a down-conversion-based single-photon source, and single-photon detection. Our results demonstrate an amplification adding a level of noise lower than the minimum allowed by quantum mechanics for deterministic amplifiers. This is made possible by the nondeterministic character of our device, whose success rate is sufficiently low not to violate any fundamental limit. We compare our experimental data to a model taking into account the main imperfections of the setup and find a good agreement.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1103/PhysRevA.83.063801
Copyright Statement Copyright 2011 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 83
Issue Number 6
Page from 063801-1
Page to 063801-9
ISSN 1050-2947
Date Accessioned 2011-12-01
Language en_US
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Quantum Information, Computation and Communication; Quantum Optics; Quantum Physics
URI http://hdl.handle.net/10072/42826
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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