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

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    Author(s)
    Blandino, Rémi
    Ferreyrol, Franck
    Barbieri, Marco
    Grangier, Philippe
    Tualle-Brouri, Rosa
    Griffith University Author(s)
    Ferreyrol, Franck M.
    Year published
    2012
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    Abstract
    We discuss the characterization of a p-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.We discuss the characterization of a p-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.
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    Journal Title
    New Journal of Physics
    Volume
    14
    DOI
    https://doi.org/10.1088/1367-2630/14/1/013017
    Copyright Statement
    © 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.
    Note
    Page numbers are not for citation purposes. Instead, this article has the unique article number of 013017.
    Subject
    Quantum Information, Computation and Communication
    Quantum Optics
    Physical Sciences
    Publication URI
    http://hdl.handle.net/10072/46932
    Collection
    • Journal articles

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