Refereed journal article or data article (A1)

Steering Heat Engines: A Truly Quantum Maxwell Demon

List of Authors: Beyer K, Luoma K, Strunz WT


Publication year: 2019

Journal: Physical Review Letters

Journal name in source: PHYSICAL REVIEW LETTERS

Journal acronym: PHYS REV LETT

Volume number: 123

Issue number: 25

Number of pages: 6

ISSN: 0031-9007


We address the question of verifying the quantumness of thermal machines. A Szilard engine is truly quantum if its work output cannot be described by a local hidden state 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 Szilard 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.

Last updated on 2022-04-03 at 12:43