Exploiting positive work and efficiency of quantum Otto engine based on two coupled two-level atomic systems: Local vs global approach
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DOI: 10.1063/5.0287732
Abstract: We developed a model of a quantum Otto engine using two dipole-coupled two-level atoms. Based on the platform, we focus on fundamental thermodynamic quantities, including heat absorption, release to heat baths, work done, and efficiency.… read more here.
Keywords: two level; efficiency; coupled two; quantum otto ... See more keywords
Nonadiabatic single-qubit quantum Otto engine
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DOI: 10.1103/physrevb.101.054513
Abstract: According to Clausius formulation of the second law of thermodynamics, for any thermal machine withdrawing heats ${Q}_{1,2}$ from two heat reservoirs at temperatures ${T}_{1,2}$, it holds that ${Q}_{1}/{T}_{1}+{Q}_{2}/{T}_{2}\ensuremath{\le}0$. Combined with the observation that the quantity… read more here.
Keywords: nonadiabatic single; single qubit; otto engine; quantum otto ... See more keywords