| Issue |
EPL
Volume 95, Number 1, July 2011
|
|
|---|---|---|
| Article Number | 10005 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/95/10005 | |
| Published online | 20 June 2011 | |
Thermodynamic reversibility in feedback processes
Departamento de Física Atómica, Molecular y Nuclear and GISC, Universidad Complutense de Madrid, 28040 Madrid, Spain, EU
Received:
2
April
2011
Accepted:
18
May
2011
The sum of the average work dissipated plus the information gained during a thermodynamic process with discrete feedback must exceed zero. We demonstrate that the minimum value of zero is attained only by feedback-reversible processes that are indistinguishable from their time-reversal, thereby extending the notion of thermodynamic reversibility to feedback processes. In addition, we prove that in every realization of a feedback-reversible process the sum of the work dissipated and change in uncertainty is zero.
PACS: 05.70.-a – Thermodynamics / 05.20.-y – Classical statistical mechanics / 89.70.-a – Information and communication theory
© EPLA, 2011
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