Is coherence catalytic?

Vaccaro, J., Croke, S. and Barnett, S. (2018) Is coherence catalytic? Journal of Physics A: Mathematical and Theoretical, 51(41), 414008. (doi: 10.1088/1751-8121/aac112)

161699.pdf - Accepted Version



Quantum coherence, the ability to control the phases in superposition states is a resource, and it is of crucial importance, therefore, to understand how it is consumed in use. It has been suggested that catalytic coherence is possible, that is repeated use of the coherence without degradation or reduction in performance. The claim has particular relevance for quantum thermodynamics because, were it true, it would allow free energy that is locked in coherence to be extracted indefinitely. We address this issue directly with a careful analysis of the proposal by Åberg (2014 Phys. Rev. Lett. 113 150402). We find that coherence cannot be used catalytically, or even repeatedly without limit.

Item Type:Articles
Additional Information:JAV thanks the Australian Research Council (LP140100797) and the Lockheed Martin Corporation for financial support, and acknowledges discussions with S Bedkihal. SMB thanks the Royal Society for support (RP150122).
Glasgow Author(s) Enlighten ID:Barnett, Professor Stephen and Croke, Dr Sarah
Authors: Vaccaro, J., Croke, S., and Barnett, S.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Physics A: Mathematical and Theoretical
Publisher:IOP Publishing
ISSN (Online):1751-8121
First Published:First published in Journal of Physics A: Mathematical and Theoretical 51(41):414008
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
721291Astronomy and physics, theoretical physics and application physics / Quantum Theory. Royal Society Research Professorship.Stephen BarnettThe Royal Society (ROYSOC)RP150122S&E P&A - PHYSICS & ASTRONOMY