Article (Scientific journals)
First law of quantum thermodynamics in a driven open two-level system
Juan-Delgado, Adrian; CHENU, Aurélia
2021In Physical Review. A
Peer reviewed
 

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Keywords :
open quantum system; quantum thermodynamics
Abstract :
[en] Assigning the variations of internal energy into heat or work contributions is a challenging task due to the fact that these properties are trajectory dependent. A number of proposals have been put forward for open quantum systems following an arbitrary dynamics. We here focus on nonequilibrium thermodynamics of a two-level system and explore in addition to the conventional approach, two definitions motivated by either classical work or heat in which the driving Hamiltonian or the trajectory itself, respectively, are used to set up a reference basis. We first give the thermodynamic properties for an arbitrary dynamics and illustrate the results on the Bloch sphere. Then, we solve the particular example of a periodically driven qubit interacting with a dissipative and decoherence bath. Our results illustrate the trajectory-dependent character of heat and work and how contributions originally assigned to dissipation in the Lindblad equation can become a coherent part assigned to work.
Disciplines :
Physics
Author, co-author :
Juan-Delgado, Adrian;  Donostia International Physics Center, E-20018 San Sebastián, Spain
CHENU, Aurélia ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
External co-authors :
yes
Language :
English
Title :
First law of quantum thermodynamics in a driven open two-level system
Publication date :
2021
Journal title :
Physical Review. A
ISSN :
1050-2947
eISSN :
1094-1622
Publisher :
American Physical Society, United States - Maryland
Peer reviewed :
Peer reviewed
Focus Area :
Physics and Materials Science
Available on ORBilu :
since 15 November 2021

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