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  • Multiparticle decoherence-free subspaces in extended systems

    Author
    I. Karasik, Rausa
    Marzlin, Karl-Peter
    C. Sanders, Barry
    Birgitta Whaley, K.
    Year published
    2007
    Metadata
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    Abstract
    We develop a method to determine spatial configurations to realize decoherence-free subspaces for spatially extended multiparticle systems. We have assumed normal reservoir behavior including translational invariance of the reservoir and preparation in stationary states or mixture thereof and weak Markovian system-reservoir coupling that requires energy transfer. One important outcome of our method is a proof that there does not exist a multiparticle decoherence-free subspace in such systems except in the limit that the spatial extent of the system becomes infinitesimal.We develop a method to determine spatial configurations to realize decoherence-free subspaces for spatially extended multiparticle systems. We have assumed normal reservoir behavior including translational invariance of the reservoir and preparation in stationary states or mixture thereof and weak Markovian system-reservoir coupling that requires energy transfer. One important outcome of our method is a proof that there does not exist a multiparticle decoherence-free subspace in such systems except in the limit that the spatial extent of the system becomes infinitesimal.
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    Journal Title
    Physical Review A
    Volume
    76
    Subject
    Quantum Information, Computation and Communication
    Publication URI
    http://hdl.handle.net/10072/33120
    Collection
    • Journal articles

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