Preprint Article Version 1 This version is not peer-reviewed

Isoenergetic Cycle for the Quantum Rabi Model

Version 1 : Received: 17 August 2018 / Approved: 18 August 2018 / Online: 18 August 2018 (06:10:27 CEST)

A peer-reviewed article of this Preprint also exists.

Barrios, G.A.; Peña, F.J.; Albarrán-Arriagada, F.; Vargas, P.; Retamal, J.C. Quantum Mechanical Engine for the Quantum Rabi Model. Entropy 2018, 20, 767. Barrios, G.A.; Peña, F.J.; Albarrán-Arriagada, F.; Vargas, P.; Retamal, J.C. Quantum Mechanical Engine for the Quantum Rabi Model. Entropy 2018, 20, 767.

Journal reference: Entropy 2018, 20, 767
DOI: 10.3390/e20100767

Abstract

The isoenergetic cycle is a purely mechanical cycle comprised of adiabatic and isoenergetic processes. In the latter the system interacts with an energy bath keeping constant the expectation value of the Hamiltonian. This cycle has been mostly studied in systems consisting of particles confined in a power-law trap. In this work we study the performance of the isoenergetic cycle for a system described by the quantum Rabi model for the case of controlling the coupling strength parameter, the resonator frequency and the two-level system frequency. For the cases of controlling either the coupling strength parameter or the resonator frequency, we find that it is possible to closely approach to maximal unit efficiency when the parameter is sufficiently increased in the first adiabatic stage. In addition, for the first two cases the maximal work extracted is obtained at parameter values corresponding to high efficiency which constitutes an improvement over current proposals of this cycle.

Subject Areas

quantum thermodynamics; quantum Rabi model; isoenergetic cycle

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