RT Journal Article
T1 Topological heat transport and symmetry-protected boson currents
A1 Rivas, Ángel
A1 Martín Delgado, Miguel Ángel
AB The study of non-equilibrium properties in topological systems is of practical and fundamental importance. Here, we analyze the stationary properties of a two-dimensional bosonic Hofstadter lattice coupled to two thermal baths in the quantum open-system formalism. Novel phenomena appear like chiral edge heat currents that are the out-of-equilibrium counterparts of the zero-temperature edge currents. They support a new concept of dissipative symmetry-protection, where a set of discrete symmetries protects topological heat currents, difering from the symmetry-protection devised in closed systems and zero-temperature. Remarkably, one of these currents fows opposite to the decreasing external temperature gradient. As the starting point, we consider the case of a single external reservoir already showing prominent results like thermal erasure efects and topological thermal currents. Our results are experimentally accessible with platforms like photonics systems and optical lattices.
PB Nature publishing group
SN 2045-2322
YR 2017
FD 2017-07-25
LK https://hdl.handle.net/20.500.14352/18165
UL https://hdl.handle.net/20.500.14352/18165
LA eng
NO © 2017 the autors and Macmillan Publishers Limited, part of Springer Nature. We acknowledge the Spanish MINECO grants FIS2015-67411, FIS2012-33152, and a “Juan de la Cierva Incorporación” research contract, the CAM research consortium QUITEMAD+ S2013/ICE-2801, and U.S. Army Research Ofce through grant W911NF-14-1-0103 for partial fnancial support.
NO Ministerio de Economía y Competitividad (MINECO)
NO Comunidad de Madrid
NO U.S. Army Research Ofce
DS Docta Complutense
RD 29 abr 2024