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Quantum walks of correlated photons

Quantum walks of correlated photons
Quantum walks of correlated photons
Quantum walks of correlated particles offer the possibility of studying large-scale quantum interference; simulating biological, chemical, and physical systems; and providing a route to universal quantum computation. We have demonstrated quantum walks of two identical photons in an array of 21 continuously evanescently coupled waveguides in a SiOxNy chip. We observed quantum correlations, violating a classical limit by 76 standard deviations, and found that the correlations depended critically on the input state of the quantum walk. These results present a powerful approach to achieving quantum walks with correlated particles to encode information in an exponentially larger state space.
0036-8075
1500-1503
Peruzzo, Alberto
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Lobino, Mirko
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Matthews, Jonathan
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Matsuda, Nobuyuki
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Politi, Alberto
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Poulios, Konstantinos
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Zhou, Xiao-Qi
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Lahini, Yoav
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Ismail, Nur
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Wörhoff, Kerstin
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Bromberg, Yaron
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Silberberg, Yaron
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Thompson, Mark
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O'Brien, Jeremy
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Peruzzo, Alberto
01b3682e-f137-40ca-8a9b-1dacf59ab0a6
Lobino, Mirko
3a4b0ec9-0578-4f2a-b4d6-c9f2b0aef18e
Matthews, Jonathan
d386ed20-9407-4274-aa39-202aa83e372f
Matsuda, Nobuyuki
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Politi, Alberto
cf75c0a8-d34d-4cbe-b9d5-e408c0edeeec
Poulios, Konstantinos
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Zhou, Xiao-Qi
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Lahini, Yoav
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Ismail, Nur
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Wörhoff, Kerstin
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Bromberg, Yaron
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Silberberg, Yaron
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Thompson, Mark
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O'Brien, Jeremy
850b6d73-858f-4140-a054-547ae011e435

Peruzzo, Alberto, Lobino, Mirko, Matthews, Jonathan, Matsuda, Nobuyuki, Politi, Alberto, Poulios, Konstantinos, Zhou, Xiao-Qi, Lahini, Yoav, Ismail, Nur, Wörhoff, Kerstin, Bromberg, Yaron, Silberberg, Yaron, Thompson, Mark and O'Brien, Jeremy (2010) Quantum walks of correlated photons. Science, 329 (5998), 1500-1503. (doi:10.1126/science.1193515).

Record type: Article

Abstract

Quantum walks of correlated particles offer the possibility of studying large-scale quantum interference; simulating biological, chemical, and physical systems; and providing a route to universal quantum computation. We have demonstrated quantum walks of two identical photons in an array of 21 continuously evanescently coupled waveguides in a SiOxNy chip. We observed quantum correlations, violating a classical limit by 76 standard deviations, and found that the correlations depended critically on the input state of the quantum walk. These results present a powerful approach to achieving quantum walks with correlated particles to encode information in an exponentially larger state space.

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Published date: 17 September 2010
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 358546
URI: http://eprints.soton.ac.uk/id/eprint/358546
ISSN: 0036-8075
PURE UUID: 98cef140-f671-4ca4-b6e4-7628189e7835
ORCID for Alberto Politi: ORCID iD orcid.org/0000-0002-3668-9474

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Date deposited: 11 Oct 2013 13:09
Last modified: 10 Dec 2019 01:34

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Contributors

Author: Alberto Peruzzo
Author: Mirko Lobino
Author: Jonathan Matthews
Author: Nobuyuki Matsuda
Author: Alberto Politi ORCID iD
Author: Konstantinos Poulios
Author: Xiao-Qi Zhou
Author: Yoav Lahini
Author: Nur Ismail
Author: Kerstin Wörhoff
Author: Yaron Bromberg
Author: Yaron Silberberg
Author: Mark Thompson
Author: Jeremy O'Brien

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