Role of coherence in the nonequilibrium thermodynamics of quantum systems
Citation:
Francica, G., Goold, J., Plastina, F., Role of coherence in the nonequilibrium thermodynamics of quantum systems, Physical Review E: Statistical, Nonlinear and Soft Matter Physics, 2019 Apr;99(4-1):042105Abstract:
Exploiting the relative entropy of coherence, we isolate the coherent contribution in the energetics of a driven nonequilibrium quantum system. We prove that a division of the irreversible work can be made into a coherent and incoherent part. This provides an operational criterion for quantifying the coherent contribution in a generic nonequilibrium transformation on a closed quantum system. We then study such a contribution in two physical models of a driven qubit and kicked rotor. In addition, we also show that coherence generation is connected to the nonadiabaticity of a processes, for which it gives the dominant contribution for slow-enough transformations. The amount of generated coherence in the energy eigenbasis is equivalent to the change in diagonal entropy, and here we show that it fulfills a fluctuation theorem.
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Grant Number
Science Foundation Ireland
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http://people.tcd.ie/gooldjDescription:
PUBLISHED
Author: Goold, John
Sponsor:
Science Foundation IrelandType of material:
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Series/Report no:
Physical Review E: Statistical, Nonlinear and Soft Matter Physics;99;
4;
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http://dx.doi.org/10.1103/PhysRevE.99.042105Metadata
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