title: Energetics of an rf SQUID Coupled to Two Thermal Reservoirs.
abstract: We study energetics of a Josephson tunnel junction connecting a superconducting loop pierced by an external magnetic flux (an rf SQUID) and coupled to two independent thermal reservoirs of different temperature. In the framework of the theory of quantum dissipative systems, we analyze energy currents in stationary states. The stationary energy flow can be periodically modulated by the external magnetic flux exemplifying the rf SQUID as a quantum heat interferometer. We also consider the transient regime and identify three distinct regimes: monotonic decay, damped oscillations and pulse-type behavior of energy currents. The first two regimes can be controlled by the external magnetic flux while the last regime is robust against its variation.
authors.affiliation: University of Silesia, 40-007 Katowice, Poland; Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, United States of America.
authors.forename: B
authors.initials: B
authors.lastname: Gardas
authors.affiliation: University of Silesia, 40-007 Katowice, Poland; Silesian Center for Education and Interdisciplinary Research, University of Silesia, 41-500 Chorzów, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Łuczka
authors.affiliation: Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Ptok
authors.affiliation: University of Silesia, 40-007 Katowice, Poland; Silesian Center for Education and Interdisciplinary Research, University of Silesia, 41-500 Chorzów, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Dajka
mesh_terms: D004553:Electric Conductivity; D004735:Energy Transfer / Q000502:physiology*; D006358:Hot Temperature; D007368:Interferometry; D060526:Magnetic Fields; D008962:Models, Theoretical; D011789:Quantum Theory; D013816:Thermodynamics