Quantum reference frames and their applications to thermodynamics

Popescu, S; Sainz, AB; Short, AJ; Winter, A

Quantum reference frames and their applications to thermodynamics

Popescu, S Sainz, AB Short, AJ Winter, A

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Publication Type:: Journal Article
Citation:: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018, 376 (2123)
Issue Date:: 2018-07-13

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Field	Value	Language
dc.contributor.author	Popescu, S	en_US
dc.contributor.author	Sainz, AB	en_US
dc.contributor.author	Short, AJ	en_US
dc.contributor.author	Winter, A https://orcid.org/0000-0001-6344-4870	en_US
dc.date.available	2018-04-11	en_US
dc.date.issued	2018-07-13	en_US
dc.identifier.citation	Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018, 376 (2123)	en_US
dc.identifier.issn	1364-503X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/133906
dc.description.abstract	© 2018 Royal Society Publishing. All rights reserved. We construct a quantum reference frame, which can be used to approximately implement arbitrary unitary transformations on a system in the presence of any number of extensive conserved quantities, by absorbing any back action provided by the conservation laws. Thus, the reference frame at the same time acts as a battery for the conserved quantities. Our construction features a physically intuitive, clear and implementation-friendly realization. Indeed, the reference system is composed of the same types of subsystems as the original system and is finite for any desired accuracy. In addition, the interaction with the reference frame can be broken down into two-body terms coupling the system to one of the reference frame subsystems at a time. We apply this construction to quantum thermodynamic set-ups with multiple, possibly non-commuting conserved quantities, which allows for the definition of explicit batteries in such cases. This article is part of a discussion meeting issue 'Foundations of quantum mechanics and their impact on contemporary society'.	en_US
dc.relation.ispartof	Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences	en_US
dc.relation.isbasedon	10.1098/rsta.2018.0111	en_US
dc.subject.classification	General Science & Technology	en_US
dc.title	Quantum reference frames and their applications to thermodynamics	en_US
dc.type	Journal Article
utslib.citation.volume	2123	en_US
utslib.citation.volume	376	en_US
utslib.for	0206 Quantum Physics	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
utslib.copyright.status	closed_access
pubs.issue	2123	en_US
pubs.publication-status	Published	en_US
pubs.volume	376	en_US

Abstract:

© 2018 Royal Society Publishing. All rights reserved. We construct a quantum reference frame, which can be used to approximately implement arbitrary unitary transformations on a system in the presence of any number of extensive conserved quantities, by absorbing any back action provided by the conservation laws. Thus, the reference frame at the same time acts as a battery for the conserved quantities. Our construction features a physically intuitive, clear and implementation-friendly realization. Indeed, the reference system is composed of the same types of subsystems as the original system and is finite for any desired accuracy. In addition, the interaction with the reference frame can be broken down into two-body terms coupling the system to one of the reference frame subsystems at a time. We apply this construction to quantum thermodynamic set-ups with multiple, possibly non-commuting conserved quantities, which allows for the definition of explicit batteries in such cases. This article is part of a discussion meeting issue 'Foundations of quantum mechanics and their impact on contemporary society'.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/133906