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. Copyright © 2011 EPLA.
CITATION STYLE
Horowitz, J. M., & Parrondo, J. M. R. (2011). Thermodynamic reversibility in feedback processes. EPL, 95(1). https://doi.org/10.1209/0295-5075/95/10005
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