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Perfect state transfer and efficient quantum routing: a discrete-time quantum walk approach (1405.6422v1)

Published 25 May 2014 in quant-ph

Abstract: We show a perfect state transfer of an arbitrary unknown two-qubit state can be achieved via a discrete-time quantum walk with various settings of coin flippings, and extend this method to distribution of an arbitrary unknown multi-qubit entangled state between every pair of sites in the multi-dimensional network. Furthermore, we study the routing of quantum information on this network in a quantum walk architecture, which can be used as quantum information processors to communicate between separated qubits.

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