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  • Experimental optimal cloning of four-dimensional quantum states of photons

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    Author(s)
    Nagali, E
    Giovannini, D
    Marrucci, L
    Slussarenko, S
    Santamato, E
    Sciarrino, F
    Griffith University Author(s)
    Slussarenko, Sergei
    Year published
    2010
    Metadata
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    Abstract
    Optimal quantum cloning is the process of making one or more copies of an arbitrary unknown input quantum state with the highest possible fidelity. All reported demonstrations of quantum cloning have so far been limited to copying two-dimensional quantum states, or qubits. We report the experimental realization of the optimal quantum cloning of four-dimensional quantum states, or ququarts, encoded in the polarization and orbital angular momentum degrees of freedom of photons. Our procedure, based on the symmetrization method, is also shown to be generally applicable to quantum states of arbitrarily high dimension-or qudits-and ...
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    Optimal quantum cloning is the process of making one or more copies of an arbitrary unknown input quantum state with the highest possible fidelity. All reported demonstrations of quantum cloning have so far been limited to copying two-dimensional quantum states, or qubits. We report the experimental realization of the optimal quantum cloning of four-dimensional quantum states, or ququarts, encoded in the polarization and orbital angular momentum degrees of freedom of photons. Our procedure, based on the symmetrization method, is also shown to be generally applicable to quantum states of arbitrarily high dimension-or qudits-and to be scalable to an arbitrary number of copies, in all cases remaining optimal. Furthermore, we report the bosonic coalescence of two single-particle entangled states.
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    Journal Title
    Physical Review Letters
    Volume
    105
    DOI
    https://doi.org/10.1103/PhysRevLett.105.073602
    Copyright Statement
    © 2010 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.
    Subject
    Mathematical sciences
    Physical sciences
    Quantum information, computation and communication
    Quantum optics and quantum optomechanics
    Engineering
    Publication URI
    http://hdl.handle.net/10072/57579
    Collection
    • Journal articles

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