Revealing the strokes of autonomous quantum heat engines with work and heat fluctuations
arXiv:1907.01039 · doi:10.1103/PhysRevA.101.010101
Abstract
We analyze an autonomous thermoelectric engine composed of two superconducting qubits coupled to separate heat baths and connected by a Josephson junction. Work and heat are process quantities and not observables of the engine quantum system, but their rates can be derived from the steady state expectation value of appropriate system observables and their fluctuations are given by correlation functions determined with the GKLS master equation and quantum regression theorem. The correlation functions also reveal a cyclical, dynamical transfer of energy - the strokes of the engine - hiding underneath the steady state.
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- Unification of the first law of quantum thermodynamics
- Stochastic Thermodynamic Cycles of a Mesoscopic Thermoelectric Engine
- Key Issues Review: Useful autonomous quantum machines
- Quantum control of classical motion: piston dynamics in a Rabi-coupled Bose-Einstein condensate