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  • Reconfigurable controlled two-qubit operation on a quantum photonic chip

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    Author(s)
    Li, HW
    Przeslak, S
    Niskanen, AO
    Matthews, JCF
    Politi, A
    Shadbolt, P
    Laing, A
    Lobino, M
    Thompson, MG
    O'Brien, JL
    Griffith University Author(s)
    Lobino, Mirko
    Year published
    2011
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    Abstract
    Integrated quantum photonics is an appealing platform for quantum information processing, quantum communication and quantum metrology. In all these applications it is necessary not only to be able to create and detect Fock states of light but also to programme the photonic circuits that implement some desired logical operation. Here we demonstrate a reconfigurable controlled twoqubit operation on a chip using a multiwaveguide interferometer with a tunable phase shifter. We found excellent agreement between theory and experiment, with a 0.98ᰮ02 average similarity between measured and ideal operations.Integrated quantum photonics is an appealing platform for quantum information processing, quantum communication and quantum metrology. In all these applications it is necessary not only to be able to create and detect Fock states of light but also to programme the photonic circuits that implement some desired logical operation. Here we demonstrate a reconfigurable controlled twoqubit operation on a chip using a multiwaveguide interferometer with a tunable phase shifter. We found excellent agreement between theory and experiment, with a 0.98ᰮ02 average similarity between measured and ideal operations.
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    Journal Title
    New Journal of Physics
    Volume
    13
    DOI
    https://doi.org/10.1088/1367-2630/13/11/115009
    Copyright Statement
    © 2011 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.
    Subject
    Physical sciences
    Quantum information, computation and communication
    Quantum optics and quantum optomechanics
    Publication URI
    http://hdl.handle.net/10072/53068
    Collection
    • Journal articles

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