Reversible feedback confinement



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Granger, Léo and Dinis Vizcaíno, Luis Ignacio and Horowitz, Jordan M. and Rodríguez Parrondo, Juan Manuel (2016) Reversible feedback confinement. EPL, 115 (5). ISSN 0295-5075

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We present a feedback protocol that is able to confine a system to a single microstate without heat dissipation. The protocol adjusts the Hamiltonian of the system in such a way that the Bayesian posterior distribution after measurement is in equilibrium. As a result, the whole process satisfies feedback reversibility - the process is indistinguishable from its time reversal- and assures the lowest possible dissipation for confinement. In spite of the whole process being reversible it can surprisingly be implemented in finite time. We illustrate the idea with a Brownian particle in a harmonic trap with increasing stiffness and present a general theory of reversible feedback confinement for systems with discrete states. editor's choice Copyright (C) EPLA, 2016.

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© EPLA, 2016.
This work has been supported by grants ENFASIS (FIS2011-22644) and TerMic (FIS2014-52486-R) from the Spanish Government. JMH is supported by the Gordon and Betty Moore Foundation through Grant GBMF4343.

Uncontrolled Keywords:Thermodynamics; Information; Principle
Subjects:Sciences > Physics > Nuclear physics
ID Code:41909
Deposited On:04 Apr 2017 18:51
Last Modified:10 Dec 2018 14:57

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