Volume 101, Number 5, March 2013
|Number of page(s)||6|
|Published online||20 March 2013|
Differential Landauer's principle
Max-Planck-Institut für Physik komplexer Systeme - Nöthnitzerstr. 38, D-01187, Dresden, Germany, EU
Received: 15 November 2012
Accepted: 22 February 2013
Landauer's principle states that the erasure of information must be a dissipative process. In this paper, we carefully analyze the recording and erasure of information on a physical memory. On the one hand, we show that, in order to record some information, the memory has to be driven out of equilibrium. On the other hand, we derive a differential version of Landauer's principle: We link the rate at which entropy is produced at every time of the erasure process to the rate at which information is erased.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 05.20.-y – Classical statistical mechanics
© EPLA, 2013
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