Information erasure without an energy cost

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Title Information erasure without an energy cost
Author Vaccaro, Joan; Barnett, Stephen M.
Journal Name Proceedings of the Royal Society A
Year Published 2011
Place of publication United Kingdom
Publisher The Royal Society Publishing
Abstract Landauer argued that the process of erasing the information stored in a memory device incurs an energy cost in the form of a minimum amount of mechanical work. We find, however, that this energy cost can be reduced to zero by paying a cost in angular momentum or any other conserved quantity. Erasing the memory of Maxwell’s demon in this way implies that work can be extracted from a single thermal reservoir at a cost of angular momentum and an increase in total entropy. The implications of this for the second law of thermodynamics are assessed.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1098/rspa.2010.0577
Copyright Statement Copyright 2011 Royal Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
Volume 467
Issue Number 2130
Page from 1770
Page to 1778
ISSN 1471-2946
Date Accessioned 2011-07-06
Language en_US
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Quantum Information, Computation and Communication; Thermodynamics and Statistical Physics
URI http://hdl.handle.net/10072/42226
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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