Quantum thermodynamics of a trapped two-level atom in an external light field
Department of Physics, University of Kurdistan, P.O.Box 66177-15175, Sanandaj, Iran
2 Department of Physics, University of Garmian, Kalar, KRG, Iraq
Accepted: 10 January 2022
Published online: 5 February 2022
The quantum thermodynamics of a fixed or oscillating two-level atom interacting with a controlled classical external field is investigated in the framework of the two-point measurement scheme. For a fixed two-level atom, by ignoring the fast oscillating terms, the rotating wave approximation is applied, and also by taking into account the fast oscillating terms, a numerical approach is used. For the oscillating two-level atom, calculations are exact and we have closed-form expressions for the results. The population dynamics, decoherency function, characteristic function, work distribution, and Helmholtz free energy are calculated and discussed. The Jarzynski theorem’s consistency is verified.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022