Energetic instability of passive states in thermodynamics

File Description SizeFormat 
Energetic instability of passive states in thermodynamics.pdfPublished version764.89 kBAdobe PDFDownload
Title: Energetic instability of passive states in thermodynamics
Author(s): Sparaciari, C
Jennings, D
Oppenheim, J
Item Type: Journal Article
Abstract: Passivity is a fundamental concept in thermodynamics that demands a quantum system’s energy cannot be lowered by any reversible, unitary process acting on the system. In the limit of many such systems, passivity leads in turn to the concept of complete passivity, thermal states and the emergence of a thermodynamic temperature. Here we only consider a single system and show that every passive state except the thermal state is unstable under a weaker form of reversibility. Indeed, we show that given a single copy of any athermal quantum state, an optimal amount of energy can be extracted from it when we utilise a machine that operates in a reversible cycle. This means that for individual systems, the only form of passivity that is stable under general reversible processes is complete passivity, and thus provides a physically motivated identification of thermal states when we are not operating in the thermodynamic limit.
Publication Date: 1-Dec-2017
Date of Acceptance: 22-Sep-2017
URI: http://hdl.handle.net/10044/1/59174
DOI: https://dx.doi.org/10.1038/s41467-017-01505-4
ISSN: 2041-1723
Publisher: NATURE PUBLISHING GROUP
Journal / Book Title: NATURE COMMUNICATIONS
Volume: 8
Copyright Statement: © 2017 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article ’ s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article ’ s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/
Keywords: Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
QUANTUM-SYSTEMS
WORK
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
QUANTUM-SYSTEMS
WORK
MD Multidisciplinary
Publication Status: Published
Article Number: ARTN 1895
Online Publication Date: 2017-12-01
Appears in Collections:Quantum Optics and Laser Science
Physics
Faculty of Natural Sciences



Items in Spiral are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commons