Second law of thermodynamics and quantum feedback control: Maxwell's demon with weak measurements
Journal Article
·
· Physical Review. A
- Department of Physics, University of Massachusetts at Boston, Boston, Massachusetts 02125 (United States)
Recently Sagawa and Ueda [Phys. Rev. Lett. 100, 080403 (2008)] derived a bound on the work that can be extracted from a quantum system with the use of feedback control. For many quantum measurements their bound was not tight. We show that a tight version of this bound follows straightforwardly from recent work on Maxwell's demon by Alicki et al. [Open Syst. Inf. Dyn. 11, 205 (2004)], for both discrete and continuous feedback control. Our analysis also shows that bare, efficient measurements always do non-negative work on a system in equilibrium, but do not add heat.
- OSTI ID:
- 21313232
- Journal Information:
- Physical Review. A, Vol. 80, Issue 1; Other Information: DOI: 10.1103/PhysRevA.80.012322; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermodynamics of quantum measurement and Maxwell's demon's arrow of time
Viewpoint: Exorcizing Maxwell’s demon
Revisiting the quantum Szilard engine with fully quantum considerations
Journal Article
·
Thu Oct 27 00:00:00 EDT 2022
· Physical Review A
·
OSTI ID:21313232
+1 more
Viewpoint: Exorcizing Maxwell’s demon
Journal Article
·
Tue Dec 01 00:00:00 EST 2015
· Physics
·
OSTI ID:21313232
Revisiting the quantum Szilard engine with fully quantum considerations
Journal Article
·
Sat Dec 15 00:00:00 EST 2012
· Annals of Physics (New York)
·
OSTI ID:21313232
+2 more