Discrete single-photon quantum walks with tunable decoherence

Broome, M. A., Fedrizzi, A., Lanyon, B. P., Kassal, I., Aspuru-Guzik, A. and White, A. G. (2010) Discrete single-photon quantum walks with tunable decoherence. Physical Review Letters, 104 15: 153602-1-153602-4. doi:10.1103/PhysRevLett.104.153602

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Author Broome, M. A.
Fedrizzi, A.
Lanyon, B. P.
Kassal, I.
Aspuru-Guzik, A.
White, A. G.
Title Discrete single-photon quantum walks with tunable decoherence
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2010-04
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.104.153602
Open Access Status File (Publisher version)
Volume 104
Issue 15
Start page 153602-1
End page 153602-4
Total pages 4
Place of publication College Park, MD, U.S.A.
Publisher American Physical Society
Collection year 2011
Language eng
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. © 2010 The American Physical Society.
Keyword Absorbing boundaries
Optical elements
Quantum Computing
Quantum to classical transition
Quantum walk
Single photons
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article no: 153602

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2011 Collection
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 171 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 165 times in Scopus Article | Citations
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Created: Sun, 09 May 2010, 00:01:26 EST