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Large scale quantum walks by means of optical fiber cavities

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Title: Large scale quantum walks by means of optical fiber cavities
Authors: Boutari, J
Feizpour, A
Barz, S
Di Franco, C
Kim, MS
Kolthammer, WS
Walmsley, IA
Item Type: Journal Article
Abstract: We demonstrate a platform for implementing quantum walks that overcomes many of the barriers associated with photonic implementations. We use coupled fiber-optic cavities to implement time-bin encoded walks in an integrated system. We show that this platform can achieve very low losses combined with high-fidelity operations, enabling an unprecedented large number of steps in a passive system, as required for scenarios with multiple walkers. Furthermore the platform is reconfigurable, enabling variation of the coin, and readily extends to multidimensional lattices. We demonstrate variation of the coin bias experimentally for three different values.
Issue Date: 23-Aug-2016
Date of Acceptance: 6-Jul-2016
URI: http://hdl.handle.net/10044/1/42004
DOI: http://dx.doi.org/10.1088/2040-8978/18/9/094007
ISSN: 2040-8986
Publisher: IOP Publishing
Journal / Book Title: Journal of Optics
Volume: 18
Issue: 9
Copyright Statement: © 2016 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in Journal of Optics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at http://dx.doi.org/10.1088/2040-8978/18/9/094007.
Sponsor/Funder: Engineering & Physical Science Research Council (E
Funder's Grant Number: EP/K034480/1
Keywords: Science & Technology
Physical Sciences
Optics
quantum walks
fiber cavities
time-bin quantum coding
multiport interference
Boson sampling
PHOTONS
0205 Optical Physics
0906 Electrical And Electronic Engineering
Publication Status: Published
Article Number: 094007
Appears in Collections:Quantum Optics and Laser Science
Physics
Faculty of Natural Sciences



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