Characterization of a π-phase shift quantum gate for coherent-state qubits

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Title Characterization of a π-phase shift quantum gate for coherent-state qubits
Author Blandino, Rémi; Ferreyrol, Franck Michel; Barbieri, Marco; Grangier, Philippe; Tualle-Brouri, Rosa
Journal Name New Journal of Physics
Year Published 2012
Place of publication United Kingdom
Publisher Institute of Physics Publishing Ltd.
Abstract We discuss the characterization of a π-phase shift quantum gate acting on a qubit encoded in superpositions of coherent states. We adopt a technique relying on some a priori knowledge about the physics underlying the functioning of the device. A parameter summarizing the global quality of the quantum gate is obtained by ‘virtually’ processing an entangled state. With such an approach, we can facilitate the characterization of our gate, focusing on the useful subspace rather than on the entire phase space.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2012 Institute of Physics Publishing. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 14
Page from 013017-1
Page to 013017-9
ISSN 1367-2630
Date Accessioned 2012-01-30
Language en_US
Comments Page numbers are not for citation purposes. Instead, this article has the unique article number of 013017.
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Quantum Information, Computation and Communication; Quantum Optics
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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