The roles of quantum coherence in thermodynamic processes

• URL: http://arxiv.org/abs/2201.12202v1
• Date: Fri, 28 Jan 2022 15:58:14 GMT
• Title: The roles of quantum coherence in thermodynamic processes
• Authors: Jingyi Chen, Guozhen Su, Jincan Chen, and Shanhe Su
• Abstract summary: coherent factors can be determined by writing observables as an expansion in the basis vectors of the systemic density operator and Hamiltonian. We reveal the roles of coherence in finite-time thermodynamic processes, such as the spin precession and the spontaneous emission of a photon.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum coherence associated with the superpositions of two different sets of eigenbasis vectors has been regarded as essential in thermodynamics. It is found that coherent factors can be determined by writing observables as an expansion in the basis vectors of the systemic density operator and Hamiltonian. We reveal the roles of coherence in finite-time thermodynamic processes, such as the spin precession and the spontaneous emission of a photon. Results show that the work in the spin precession and the heat in the spontaneous emission process are mainly generated by coherence.

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