Relativity of quantum states in entanglement swapping

Nagele, C; Ilo-Okeke, EO; Rohde, PP; Dowling, JP; Byrnes, T

Relativity of quantum states in entanglement swapping

Nagele, C Ilo-Okeke, EO Rohde, PP Dowling, JP Byrnes, T

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Physics Letters, Section A: General, Atomic and Solid State Physics, 2020, 384, (15)
Issue Date:: 2020-05-29

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Field	Value	Language
dc.contributor.author	Nagele, C
dc.contributor.author	Ilo-Okeke, EO
dc.contributor.author	Rohde, PP
dc.contributor.author	Dowling, JP
dc.contributor.author	Byrnes, T
dc.date.accessioned	2021-03-19T00:42:43Z
dc.date.available	2021-03-19T00:42:43Z
dc.date.issued	2020-05-29
dc.identifier.citation	Physics Letters, Section A: General, Atomic and Solid State Physics, 2020, 384, (15)
dc.identifier.issn	0375-9601
dc.identifier.issn	1873-2429
dc.identifier.uri	http://hdl.handle.net/10453/147367
dc.description.abstract	© 2020 Elsevier B.V. The entanglement swapping protocol is analyzed in a relativistic setting, where shortly after the entanglement swapping is performed, a Bell test is performed. For an observer in the laboratory frame, a Bell violation is observed between the qubits with the swapped entanglement. In a moving frame, the order of the measurements is reversed, and a Bell violation is observed even though the particles are not entangled, directly or indirectly, or at any point in time. Although the measurement results are identical, the wavefunctions for the two frames are starkly different — one is entangled and the other is not. Furthermore, for boosts in a perpendicular direction, in the presence of decoherence, we show that the maximum Bell violation can occur across non-simultaneous points in time. This is a signature of entanglement that is spread across both space and time, showing both non-local and non-simultaneous aspects of entanglement.
dc.language	English
dc.publisher	ELSEVIER
dc.relation	http://purl.org/au-research/grants/arc/FT160100397
dc.relation.ispartof	Physics Letters, Section A: General, Atomic and Solid State Physics
dc.relation.isbasedon	10.1016/j.physleta.2020.126301
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	01 Mathematical Sciences, 02 Physical Sciences
dc.subject.classification	Fluids & Plasmas
dc.title	Relativity of quantum states in entanglement swapping
dc.type	Journal Article
utslib.citation.volume	384
utslib.for	01 Mathematical Sciences
utslib.for	02 Physical Sciences
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.consider-herdc	false
dc.date.updated	2021-03-19T00:42:41Z
pubs.issue	15
pubs.publication-status	Published
pubs.volume	384
utslib.citation.issue	15

Abstract:

© 2020 Elsevier B.V. The entanglement swapping protocol is analyzed in a relativistic setting, where shortly after the entanglement swapping is performed, a Bell test is performed. For an observer in the laboratory frame, a Bell violation is observed between the qubits with the swapped entanglement. In a moving frame, the order of the measurements is reversed, and a Bell violation is observed even though the particles are not entangled, directly or indirectly, or at any point in time. Although the measurement results are identical, the wavefunctions for the two frames are starkly different — one is entangled and the other is not. Furthermore, for boosts in a perpendicular direction, in the presence of decoherence, we show that the maximum Bell violation can occur across non-simultaneous points in time. This is a signature of entanglement that is spread across both space and time, showing both non-local and non-simultaneous aspects of entanglement.

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http://hdl.handle.net/10453/147367