Work

Geometric quantum thermodynamic engine under an isothermal operation: an application of a Thouless pumping

Year: 2026

Type: article

Abstract: We present a geometric formalism for the non-equilibrium thermodynamics of a small system coupled to external isothermal reservoirs as an application of Thouless pumping, where the electro-chemical potentials of the reservoirs and parameters in the system ʟs Hamiltonian are adiabatically controlled. By analyzing the quantum master equation for the Anderson model of a quantum dot under the wide-band approximation, we obtain the work and eﬀective eﬃciency of the thermodynamic engine as functions of the phase diﬀerence between the externally controlled electrochemical potentials after the system reaches a geometric cyclic state. Since the entropy production is negligible in adiabatic operations, the process we consider is reversible, analogous to the Carnot cycle.

Source: Journal of Physics A Mathematical and Theoretical

DOI: 10.1088/1751-8121/aeb455

Authors: Ryosuke Yoshii, Hisao Hayakawa

Institutions: Sanyo-Onoda City University, Kyoto University

Language: English

Topic: Advanced Thermodynamics and Statistical Mechanics

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,325

Funders: Kyoto University Foundation, Japan International Cooperation Agency, Japan Society for the Promotion of Science