Experimental realization of generalized qubit measurements based on quantum walks

Zhao, YY; Yu, NK; Kurzyński, P; Xiang, GY; Li, CF; Guo, GC

Experimental realization of generalized qubit measurements based on quantum walks

Zhao, YY Yu, NK

Kurzyński, P Xiang, GY Li, CF Guo, GC

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Publication Type:: Journal Article
Citation:: Physical Review A - Atomic, Molecular, and Optical Physics, 2015, 91 (4)
Issue Date:: 2015-04-06

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Field	Value	Language
dc.contributor.author	Zhao, YY	en_US
dc.contributor.author	Yu, NK https://orcid.org/0000-0003-1188-3032	en_US
dc.contributor.author	Kurzyński, P	en_US
dc.contributor.author	Xiang, GY	en_US
dc.contributor.author	Li, CF	en_US
dc.contributor.author	Guo, GC	en_US
dc.date.issued	2015-04-06	en_US
dc.identifier.citation	Physical Review A - Atomic, Molecular, and Optical Physics, 2015, 91 (4)	en_US
dc.identifier.issn	1050-2947	en_US
dc.identifier.uri	http://hdl.handle.net/10453/118656
dc.description.abstract	© 2015 American Physical Society. We report an experimental implementation of a single-qubit generalized measurement scenario, the positive-operator valued measure (POVM), based on a quantum walk model. The qubit is encoded in a single-photon polarization. The photon performs a quantum walk on an array of optical elements, where the polarization-dependent translation is performed via birefringent beam displacers and a change of the polarization is implemented with the help of wave plates. We implement: (i) trine POVM, i.e., the POVM elements uniformly distributed on an equatorial plane of the Bloch sphere; (ii) symmetric-informationally-complete (SIC) POVM; and (iii) unambiguous discrimination of two nonorthogonal qubit states.	en_US
dc.relation.ispartof	Physical Review A - Atomic, Molecular, and Optical Physics	en_US
dc.relation.isbasedon	10.1103/PhysRevA.91.042101	en_US
dc.subject.classification	General Physics	en_US
dc.title	Experimental realization of generalized qubit measurements based on quantum walks	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	91	en_US
utslib.for	0802 Computation Theory and Mathematics	en_US
utslib.for	01 Mathematical Sciences	en_US
utslib.for	02 Physical Sciences	en_US
utslib.for	03 Chemical Sciences	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	closed_access
pubs.issue	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	91	en_US

Abstract:

© 2015 American Physical Society. We report an experimental implementation of a single-qubit generalized measurement scenario, the positive-operator valued measure (POVM), based on a quantum walk model. The qubit is encoded in a single-photon polarization. The photon performs a quantum walk on an array of optical elements, where the polarization-dependent translation is performed via birefringent beam displacers and a change of the polarization is implemented with the help of wave plates. We implement: (i) trine POVM, i.e., the POVM elements uniformly distributed on an equatorial plane of the Bloch sphere; (ii) symmetric-informationally-complete (SIC) POVM; and (iii) unambiguous discrimination of two nonorthogonal qubit states.

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http://hdl.handle.net/10453/118656