Regensburg 2013 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 18: Statistical Physics Far from Thermal Equilibrium
DY 18.1: Vortrag
Mittwoch, 13. März 2013, 09:30–09:45, H48
Hardwiring a Maxwell Demon — •Philipp Strasberg1, Gernot Schaller1, Tobias Brandes1, and Massimiliano Esposito2 — 1Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, D-10623 Berlin, Germany — 2Complex Systems and Statistical Mechanics, University of Luxembourg, L-1511 Luxembourg, Luxembourg
We present a physical implementation of a Maxwell demon which consists of a conventional single electron transistor (SET) capacitively coupled to another quantum dot detecting its state. Altogether, the system is described by stochastic thermodynamics. We identify the regime where the energetics of the SET is not affected by the detection, and where its coarse-grained entropy production is shown to contain a new contribution compared to an isolated SET. This additional contribution can be identified as the information flow generated by the ``Maxwell demon'' feedback in an idealized limit.