Discrete Single-Photon Quantum Walks with Tunable Decoherence

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Discrete Single-Photon Quantum Walks with Tunable Decoherence

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Title: Discrete Single-Photon Quantum Walks with Tunable Decoherence
Author: Broome, M. A.; Fedrizzi, A.; Lanyon, B. P.; Kassal, Ivan; Aspuru-Guzik, Alan; White, A. G.

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Citation: Broome, M. A., A. Fedrizzi, B. P. Lanyon, Ivan Kassal, Alan Aspuru-Guzik, and A. G. White. 2010. Discrete single-photon quantum walks with tunable decoherence. Physical Review Letters 104(15): 153602.
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Abstract: Quantum walks have a host of applications, ranging from quantum computing to the simulation of biological systems. We present an intrinsically stable, deterministic implementation of discrete quantum walks with single photons in space. The number of optical elements required scales linearly with the number of steps. We measure walks with up to 6 steps and explore the quantum-to-classical transition by introducing tunable decoherence. Finally, we also investigate the effect of absorbing boundaries and show that decoherence significantly affects the probability of absorption.
Published Version: doi: 10.1103/PhysRevLett.104.153602
Other Sources: http://arxiv.org/abs/1002.4923
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:4657438
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