[en] We consider open quantum systems weakly coupled to thermal reservoirs and subjected to quantum feedback
operations triggered with or without delay by monitored quantum jumps. We establish a thermodynamic
description of such systems and analyze how the first and second law of thermodynamics are modified by
the feedback. We apply our formalism to study the efficiency of a qubit subjected to a quantum feedback control
and operating as a heat pump between two reservoirs. We also demonstrate that quantum feedbacks can be used
to stabilize coherences in nonequilibrium stationary states which in some cases may even become pure quantum
states.
Disciplines :
Physics
Author, co-author :
Strasberg, P.; Teschische Universität Berlin > Institut für Theoretische Physik
Schaller, G.; Technische Universität Berlin > Institut für Theoretische Physik
Brandes, T.; Technische Universität Berlin > Institut für Theoretische Physik
Esposito, Massimiliano ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Language :
English
Title :
Thermodynamics of quantum-jump-conditioned feedback control
Publication date :
December 2013
Journal title :
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
ISSN :
1550-2376
Publisher :
American Physical Society, College Park, United States - Maryland