Quantum thermodynamic Otto machines: A spin-system approach
Institute of Theoretical Physics I, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany
An overview of the realization of an Otto cycle in the quantum regime is given. A detailed description of the involved steps and the efficiency is derived for a quantum machine consisting of a single spin. Within this approach it is possible to understand what happens when the Otto efficiency reaches the Carnot efficiency. The establishment of the Otto cycle in quite a different scenario like that of algorithmic cooling is indicated.
© EDP Sciences, Springer-Verlag, 2007