Efficiency of a quantum Otto heat engine operating under a reservoir at effective negative temperatures
arXiv:1811.02917 · doi:10.1103/PhysRevLett.122.240602
Abstract
Abstract We perform an experiment in which a quantum heat engine works under two reservoirs, one at a positive spin temperature and the other at an effective negative spin temperature i.e., when the spin system presents population inversion. We show that the efficiency of this engine can be greater than that when both reservoirs are at positive temperatures. We also demonstrate the counter-intuitive result that the Otto efficiency can be beaten only when the quantum engine is operating in the finite-time mode.
arXiv comment13 pages, 6 figures, Accepted in Physical Review Letters
References in corpus (26)
- Quantum Thermodynamic Cycles and quantum heat engines
- A single-atom heat engine
- A nano heat engine beyond the Carnot limit
- How small can thermal machines be? The smallest possible refrigerator
- The second law, Maxwell's daemon and work derivable from quantum heat engines
- Experimental reconstruction of work distribution and verification of fluctuation relations at the full quantum level
- Experimental characterization of a spin quantum heat engine
- Negative Absolute Temperature for Motional Degrees of Freedom
- Squeezed thermal reservoirs as a resource for a nano-mechanical engine beyond the Carnot limit
- Inconsistent thermostatistics and negative absolute temperatures
- Irreversible work and inner friction in quantum thermodynamic processes
- Minimal universal quantum heat machine
- Gibbs, Boltzmann, and negative temperatures
- An alternative quantum fidelity for mixed states of qudits
- Non-equilibrium quantum heat machines
- Construction of microcanonical entropy on thermodynamic pillars
- Steady state entanglement beyond thermal limits
- Consistent description of fluctuations requires negative temperatures
- Negative temperatures and the definition of entropy
- Single-particle machine for quantum thermalization
- The Gibbs "volume" entropy is incorrect
- Irreversible Work and Internal Friction in a Quantum Otto Cycle of a Single Arbitrary Spin
- Relaxation to Negative Temperatures in Double Domain Systems
- In defence of negative temperature
- Revealing the work cost of generalized thermal baths
- Thermodynamic laws in isolated systems
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