Driven Spin Systems as Quantum Thermodynamic Machines: Fundamental Limits - Condensed Matter > Statistical MechanicsReportar como inadecuado




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Abstract: We show that coupled two level systems like qubits studied in quantuminformation can be used as a thermodynamic machine. At least three qubits orspins are necessary and arranged in a chain. The system is interfaced betweentwo split baths and the working spin in the middle is externally driven. Themachine performs Carnot-type cycles and is able to work as heat pump or enginedepending on the temperature difference of the baths $\Delta T$ and the energydifferences in the spin system $\Delta E$. It can be shown that the efficiencyis a function of $\Delta T$ and $\Delta E$.



Autor: M. J. Henrich, M. Michel, G. Mahler

Fuente: https://arxiv.org/







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