  The design and implementation of quantum technologies necessitates the
understanding of thermodynamic processes in the quantum domain. In stark
contrast to macroscopic thermodynamics, at the quantum scale processes
generically operate far from equilibrium and are governed by fluctuations.
Thus, experimental insight and empirical findings are indispensable in
developing a comprehensive framework. To this end, we theoretically propose an
experimentally realistic quantum engine that uses transmon qubits as working
substance. We solve the dynamics analytically and calculate its efficiency.
