5 papers
Thermoelectric information engine driven by an autonomous Maxwell demon across quantum-to-classical transitions
Maximiliano Bernal Santibañez, Felipe Barra, Jose Mondaca
We study a three-terminal thermoelectric engine, focusing on the role of quantum coherence and information flow. A double-dot connects two reservoirs at different chemical potentia…
Thermalization in Spatially Extended Open Quantum Systems: Local versus Global Markovian Evolution
Jorge Tabanera-Bravo, Massimiliano Esposito, Felipe Barra +1
We investigate the dynamics of a qubit chain locally coupled to a thermal reservoir, modeled through repeated collisions with particles drawn from a heat bath. Under suitable condi…
Bosonic Working Media in a Frustrated Rhombi Chain: Otto and Stirling Cycles from Flat Bands, Caging, and Flux Control
Francisco J. Peña, Francisco J. Peña, Rafael GarcÃa-Zamora +8
We demonstrate that flat-band engineering provides a direct route to control and optimize the thermodynamic performance of quantum heat engines. We consider noninteracting bosons o…
Caloric Phenomena and Stirling-Cycle Performance in Heisenberg- Kitaev Magnon Systems
Bastian Castorene, Martin HvE Groves, Francisco J. Peña +5
We investigate the Stirling-cycle performance of a Heisenberg--Kitaev magnonic medium with Dzyaloshinskii--Moriya (DM) interactions. Using linear spin-wave theory, we show the DM i…
Universal energy fluctuations in inelastic scattering processes
Samuel L. Jacob, John Goold, Gabriel T. Landi +1
Quantum scattering is used ubiquitously in both experimental and theoretical physics across a wide range of disciplines, from high-energy physics to mesoscopic physics. In this wor…