The role of coherence in the non-equilibrium thermodynamics of quantum systems
| Autor: | Francica, G., Goold, J., Plastina, F. |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Phys. Rev. E 99, 042105 (2019) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevE.99.042105 |
| Popis: | Exploiting the relative entropy of coherence, we isolate the coherent contribution in the energetics of a driven non-equilibrium quantum system. We prove that a division of the irreversible work can be made into a coherent and incoherent part, which provides an operational criterion for quantifying the coherent contribution in a generic non-equilibrium 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 non-adiabaticity of a processes, for which it gives the dominant contribution for slow-enough transformation. 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. Comment: comments welcome |
| Databáze: | arXiv |
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