Entanglement dynamics and quasi-periodicity in discrete quantum walks

Rohde, PP; Fedrizzi, A; Ralph, TC

Entanglement dynamics and quasi-periodicity in discrete quantum walks

Rohde, PP

Fedrizzi, A Ralph, TC

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Publication Type:: Journal Article
Citation:: Journal of Modern Optics, 2012, 59 (8), pp. 710 - 720
Issue Date:: 2012-05-10

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Field	Value	Language
dc.contributor.author	Rohde, PP https://orcid.org/0000-0002-5814-7289	en_US
dc.contributor.author	Fedrizzi, A	en_US
dc.contributor.author	Ralph, TC	en_US
dc.date.issued	2012-05-10	en_US
dc.identifier.citation	Journal of Modern Optics, 2012, 59 (8), pp. 710 - 720	en_US
dc.identifier.issn	0950-0340	en_US
dc.identifier.uri	http://hdl.handle.net/10453/109951
dc.description.abstract	We study the entanglement dynamics of discrete time quantum walks acting on bounded finite sized graphs. We demonstrate that, depending on system parameters, the dynamics may be monotonic, oscillatory but highly regular, or quasi-periodic. While the dynamics of the system are not chaotic since the system comprises linear evolution, the dynamics often exhibit some features similar to chaos such as high sensitivity to the system's parameters, irregularity and infinite periodicity. Our observations are of interest for entanglement generation, which is one primary use for the quantum walk formalism. Furthermore, we show that the systems we model can easily be mapped to optical beamsplitter networks, rendering experimental observation of quasi-periodic dynamics within reach. © 2012 Copyright Taylor and Francis Group, LLC.	en_US
dc.relation.ispartof	Journal of Modern Optics	en_US
dc.relation.isbasedon	10.1080/09500340.2012.660204	en_US
dc.subject.classification	Optics	en_US
dc.title	Entanglement dynamics and quasi-periodicity in discrete quantum walks	en_US
dc.type	Journal Article
utslib.citation.volume	8	en_US
utslib.citation.volume	59	en_US
utslib.for	0205 Optical Physics	en_US
utslib.for	0206 Quantum Physics	en_US
utslib.for	1007 Nanotechnology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - QSI - Centre for Quantum Software and Information
utslib.copyright.status	open_access
pubs.issue	8	en_US
pubs.publication-status	Published	en_US
pubs.volume	59	en_US

Abstract:

We study the entanglement dynamics of discrete time quantum walks acting on bounded finite sized graphs. We demonstrate that, depending on system parameters, the dynamics may be monotonic, oscillatory but highly regular, or quasi-periodic. While the dynamics of the system are not chaotic since the system comprises linear evolution, the dynamics often exhibit some features similar to chaos such as high sensitivity to the system's parameters, irregularity and infinite periodicity. Our observations are of interest for entanglement generation, which is one primary use for the quantum walk formalism. Furthermore, we show that the systems we model can easily be mapped to optical beamsplitter networks, rendering experimental observation of quasi-periodic dynamics within reach. © 2012 Copyright Taylor and Francis Group, LLC.

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http://hdl.handle.net/10453/109951