• Feb 14 2012

    UKZN Node Seminar

    UKZN Node Seminar

    NITheP cordially invites you to a seminar

    by: Dr Ilya Sinayskiy
    University of KwaZulu-Natal & National Institute for Theoretical
    Physics (NITheP)

    Date:
    Tuesday, 14th February 2012

    Time: 14:15 15:15

    Venue: NITheP Seminar Room, Westville campus

    Title: Open Quantum Walks

    Abstract:
    Open quantum walks (OQW) are formulated as quantum
    Markov chains on graphs. It is shown that OQWs contain
    as a limit classical random walks. A suggested physical
    realization procedure for OQW can recover unitary
    quantum walks. A straightforward unravelling of the OQW
    allows for stochastic simulations in terms of quantum
    trajectories. It is shown that OQWs are a very useful tool
    for the formulation of dissipative quantum computing
    algorithms and for dissipative quantum state preparation.
    In particular, single qubit gates and the CNOT-gate are
    implemented as OQWs on fully connected graphs. Also,
    dissipative quantum state preparation of arbitrary single
    qubit states and of all two-qubit Bell-states is
    demonstrated. Finally, the discrete time version of
    dissipative quantum computing is shown to be more
    efficient if formulated in the language of OQWs.