Nonequilibrium fluctuations in quantum heat engines: Theory, example, and possible solid state experiments

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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en

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14

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New Journal of Physics, Volume 17, pp. 1-14

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We study stochastic energetic exchanges in quantum heat engines. Due to microreversibility, these obey a fluctuation relation, called the heat engine fluctuation relation, which implies the Carnot bound: no machine can have an efficiency greater than Carnot's efficiency. The stochastic thermodynamics of a quantum heat engine (including the joint statistics of heat and work and the statistics of efficiency) are illustrated by means of an optimal two-qubit heat engine, where each qubit is coupled to a thermal bath and a two-qubit gate determines energy exchanges between the two qubits. We discuss possible solid-state implementations with Cooper-pair boxes and flux qubits, quantum gate operations, and fast calorimetric on-chip measurements of single stochastic events.

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VK: Low Temperature Laboratory

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Campisi, M, Pekola, J & Fazio, R 2015, 'Nonequilibrium fluctuations in quantum heat engines: Theory, example, and possible solid state experiments', New Journal of Physics, vol. 17, 035012, pp. 1-14. https://doi.org/10.1088/1367-2630/17/3/035012