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SM ISO690:2012 MACOVEI, Mihai. Performance of the collective three-level quantum thermal engine. In: Physical Review A, 2022, nr. 4(105), pp. 1-7. ISSN 2469-9926. DOI: https://doi.org/10.1103/PhysRevA.105.043708 |
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Physical Review A | ||||||
Numărul 4(105) / 2022 / ISSN 2469-9926 | ||||||
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DOI:https://doi.org/10.1103/PhysRevA.105.043708 | ||||||
Pag. 1-7 | ||||||
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We investigate the performance of a microscopic quantum heat engine consisting of V- or Λ-type emitters interacting collectively or independently when being in contact with environmental thermal reservoirs. Though the efficiency of a Carnot's cycle is always higher than those associated with these setups, we have found that the performance of the cooperative Λ-type heat engine may be larger than that of the V type under similar conditions. Cooperativity among the emitters plays an important role for the Λ-type setup, significantly improving its performance, while it is less relevant for a V-type thermal engine. This is because the population inversion on the working atomic transition as well as its off-diagonal elements behave differently for these two atomic ensembles. |
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Cuvinte-cheie Atomic transition, condition, Cooperativity, Off-diagonal elements, performance, Population inversions, Quantum heat engines, Thermal engines, Thermal reservoir, Three-level |
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