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    block this user Christopher Granade Trusted member

    Student, Ph.D. Level / cgranade@perimeterinstitute.ca

    Institute for Quantum Computing, UWaterloo, Waterloo, ON, Canada

    Parallel Information Transfer in a Multi-Node Quantum Information Processor

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    We describe a method for coupling disjoint quantum bits (qubits) in different local processing nodes of a distributed node quantum information processor. An effective channel for information transfer between nodes is obtained by moving the system into an interaction frame where all pairs of cross-node qubits are effectively coupled via an exchange interaction between actuator elements of each node. All control is achieved via actuator-only modulation, leading to fast implementations of a universal set of internode quantum gates. The method is expected to be nearly independent of actuator decoherence and may be made insensitive to experimental variations of system parameters by appropriate design of control sequences. We show, in particular, how the induced cross-node coupling channel may be used to swap the complete quantum states of the local processors in parallel.

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    Description

    Title : Parallel Information Transfer in a Multi-Node Quantum Information Processor
    Author(s) : Troy W Borneman, Christopher E Granade, David G Cory
    Abstract : We describe a method for coupling disjoint quantum bits (qubits) in different local processing nodes of a distributed node quantum information processor. An effective channel for information transfer between nodes is obtained by moving the system into an interaction frame where all pairs of cross-node qubits are effectively coupled via an exchange interaction between actuator elements of each node. All control is achieved via actuator-only modulation, leading to fast implementations of a universal set of internode quantum gates. The method is expected to be nearly independent of actuator decoherence and may be made insensitive to experimental variations of system parameters by appropriate design of control sequences. We show, in particular, how the induced cross-node coupling channel may be used to swap the complete quantum states of the local processors in parallel.
    Keywords : quantum physics

    Subject : unspecified
    Area : Other
    Language : English
    Year : 2011

    Affiliations Institute for Quantum Computing, UWaterloo, Waterloo, ON, Canada
    Journal : ArXiv
    Pages : 6
    Url : http://arxiv.org/abs/1107.4333

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