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arXiv · 1405.6422

Perfect state transfer and efficient quantum routing: a discrete-time quantum walk approach

Xiang Zhan·Hao Qin·Zhi-hao Bian·Jian Li·Peng Xue
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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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Xiang Zhan, Hao Qin, Zhi-hao Bian, Jian Li, Peng Xue. 2014-05-25. Perfect state transfer and efficient quantum routing: a discrete-time quantum walk approach. https://doi.org/10.1103/physreva.90.012331

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