Squeezing as the source of inefficiency in the quantum Otto cycle
arXiv:1205.0031 · doi:10.1103/PhysRevB.86.014501
Abstract
The availability of controllable macroscopic devices, which maintain quantum coherence over relatively long time intervals, for the first time allows an experimental realization of many effects previously considered only as Gedankenexperiments, such as the operation of quantum heat engines. The theoretical efficiency ηof quantum heat engines is restricted by the same Carnot boundary η_C as for the classical ones: any deviations from quasistatic evolution suppressing ηbelow η_C. Here we investigate an implementation of an analog of the Otto cycle in a tunable quantum coherent circuit and show that the specific source of inefficiency is the quantum squeezing of the thermal state due to the finite speed of compression/expansion of the system.
17 pages, 5 figures
References in corpus (12)
- Atomic physics and quantum optics using superconducting circuits
- Superconducting Circuits and Quantum Information
- Quantum Thermodynamic Cycles and quantum heat engines
- The Physics of Maxwell's demon and information
- The second law, Maxwell's daemon and work derivable from quantum heat engines
- Quantum Thermodynamic Cycles and Quantum Heat Engines (II)
- Controllable coupling of superconducting flux qubits
- Microwave-Induced Cooling of a Superconducting Qubit
- Sisyphus cooling and amplification by a superconducting qubit
- Generation of squeezed states of microwave radiation in a superconducting resonant circuit
- Lower limit on the achievable temperature in resonator-based sideband cooling
- Heat cost of parametric generation of microwave squeezed states
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