Quantum walk with a four-dimensional coin

Hamilton, C.S., Gábris, A., Jex, I. and Barnett, S.M. (2011) Quantum walk with a four-dimensional coin. New Journal of Physics, 13, Art. 013015. (doi:10.1088/1367-2630/13/1/013015)

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Abstract

We examine the physical implementation of a discrete time quantum walk with a four-dimensional coin. Our quantum walker is a photon moving repeatedly through a time delay loop, with time being our position space. The quantum coin is implemented using the internal states of the photon: the polarization and two of the orbital angular momentum states. We demonstrate how to implement this physically and what components would be needed. We then illustrate some of the results that could be obtained by performing the experiment.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barnett, Professor Stephen
Authors: Hamilton, C.S., Gábris, A., Jex, I., and Barnett, S.M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:New Journal of Physics
Publisher:Institute of Physics Publishing Ltd.
ISSN:1367-2630
ISSN (Online):1367-2630
Copyright Holders:Copyright © 2011 IOP Publishing Ltd
First Published:First published in New Journal of Physics 13:013015
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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