Quantum Otto cycle in a superconducting cavity in the nonadiabatic regime
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review A"
DOI: 10.1103/physreva.105.022202
Abstract: Nicolás F. Del Grosso, Fernando C. Lombardo, Francisco D. Mazzitelli, and Paula I. Villar 1 Departamento de F́ısica Juan José Giambiagi, FCEyN UBA and IFIBA CONICET-UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón… read more here.
Keywords: cycle superconducting; nonadiabatic regime; otto cycle; superconducting cavity ... See more keywords
Fluctuations and stability of a fast-driven Otto cycle
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review B"
DOI: 10.1103/physrevb.107.195437
Abstract: We investigate the stochastic dynamics of a thermal machine realized by a fast-driven Otto cycle. By employing a stochastic approach, we find that system coherences strongly affect fluctuations depending on the thermodynamic current. Specifically, we… read more here.
Keywords: system; cycle; fast driven; fluctuations stability ... See more keywords
Collective performance of a finite-time quantum Otto cycle.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review. E"
DOI: 10.1103/physreve.100.042126
Abstract: We study the finite-time effects in a quantum Otto cycle where a collective spin system is used as the working fluid. Starting from a simple one-qubit system we analyze the transition to the limit cycle… read more here.
Keywords: finite time; time; otto cycle; performance ... See more keywords
Nonadiabatic coupled-qubit Otto cycle with bidirectional operation and efficiency gains.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.105.044120
Abstract: We study a quantum Otto cycle that uses a 2-qubit working substance whose Hamiltonian does not commute with itself at different times during unitary strokes. We investigate how the cycle responds to the loss of… read more here.
Keywords: cycle; nonadiabatic coupled; coupled qubit; qubit otto ... See more keywords
Strongly coupled quantum Otto cycle with single qubit bath.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.106.064133
Abstract: We discuss a model of a closed quantum evolution of two qubits where the joint Hamiltonian is so chosen such that one of the qubits acts as a bath and thermalizes the other qubit which… read more here.
Keywords: otto cycle; single qubit; qubit bath; bath ... See more keywords
The Quantum Friction and Optimal Finite-Time Performance of the Quantum Otto Cycle
Sign Up to like & getrecommendations! Published in 2020 at "Entropy"
DOI: 10.3390/e22091060
Abstract: In this work we considered the quantum Otto cycle within an optimization framework. The goal was maximizing the power for a heat engine or maximizing the cooling power for a refrigerator. In the field of… read more here.
Keywords: finite time; quantum; quantum otto; otto cycle ... See more keywords