The characterization and control of quantum effects in the performance thermodynamic tasks may open new avenues for small thermal machines working nanoscale. We study impact coherence energy basis operation a machine which can act either as heat engine or refrigerator. show that input enhance allow it to operate otherwise forbidden regimes. Moreover, our results also indicate that, some cases, be detrimental, rendering optimization particular models crucial task benefiting from...

The introduction of the quantum analogue a Carnot engine based on bath comprising particles with small amount coherence initiated an active line research harnessing different resources for enhancement thermal machines beyond standard reversible limit, emphasis non-thermal baths containing coherence. In our work, we investigate impact thermodynamic tasks collision model which is composed system interacting, in continuous time series coherent ancillas two at temperatures. Our results show...

Nonequilibrium effects may have a profound impact on the performance of thermal devices performing thermodynamic tasks such as refrigeration or heat pumping. The possibility enhancing operations by means quantum coherence is particular interest but requires an adequate characterization and work at level. In this work, we demonstrate that presence even small amounts in reservoirs powering three-terminal machine, enables appearance combined, hybrid modes operation, where either different...

We investigate the thermodynamics of a hybrid quantum device consisting two qubits collectively interacting with rotor and coupled dissipatively to equilibrium reservoirs at different temperatures. By modeling dynamics resulting steady state system using collision model, we identify functioning as thermal engine, refrigerator, or an accelerator. In addition, also look into device's capacity operate heat rectifier optimize both rectification coefficient flow simultaneously. Drawing analogy...

Understanding the limitations imposed by noise on current and next-generation quantum devices is a crucial step towards demonstrations of advantage with practical applications. In this work, we investigate accumulation entropy density as benchmark to monitor performance processing units. A combination analytical methods, numerical simulations, experiments programmable superconducting circuits used build simple yet heuristic model based global depolarising noise. This demonstrates potential...

We investigate the thermodynamics of a hybrid quantum device consisting two qubits collectively interacting with rotor and coupled dissipatively to equilibrium reservoirs at different temperatures. By modelling dynamics resulting steady state system using collision model, we identify functioning as thermal engine, refrigerator or an accelerator. In addition, also look into device's capacity operate heat rectifier, optimise both rectification coefficient flow simultaneously. Drawing analogy...

Non-equilibrium effects may have a profound impact on the performance of thermal devices performing thermodynamic tasks such as refrigeration or heat pumping. The possibility enhancing operations by means quantum coherence is particular interest but requires an adequate characterization and work at level. In this work, we demonstrate that presence even small amounts in reservoirs powering three-terminal machine, enables appearance combined hybrid modes operation, where either different...