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DY: Fachverband Dynamik und Statistische Physik

DY 18: Statistical Physics Far from Thermal Equilibrium

DY 18.1: Talk

Wednesday, March 13, 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.