Steering heat engines: a truly quantum Maxwell demon
Quantum Physics
2019-12-25 v2
Abstract
We address the question of verifying the quantumness of thermal machines. A Szil\'ard engine is truly quantum if its work output cannot be described by a local hidden state (LHS) model, i. e. an objective local statistical ensemble. Quantumness in this scenario is revealed by a steering-type inequality which bounds the classically extractable work. A quantum Maxwell demon can violate that inequality by exploiting quantum correlations between the work medium and the thermal environment. While for a classical Szil\'ard engine an objective description of the medium always exists, any such description can be ruled out by a steering task in a truly quantum case.
Cite
@article{arxiv.1906.12163,
title = {Steering heat engines: a truly quantum Maxwell demon},
author = {Konstantin Beyer and Kimmo Luoma and Walter T. Strunz},
journal= {arXiv preprint arXiv:1906.12163},
year = {2019}
}