Landau-Zener Lindblad equation and work extraction from coherences.

Phys Rev E

Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106 Santa Barbara, USA.

Published: April 2019

We show that the dynamics of a driven quantum system weakly coupled to a finite reservoir can be approximated by a sequence of Landau-Zener transitions if the level spacing of the reservoir is large enough. This approximation can be formulated as a repeated interaction dynamics and leads to a quantum master equation for the driven system which is of Lindblad form. The approach is validated by comparison with the numerically exact full system dynamics. To emphasize the role of coherence in the master equation, we propose a model system which shows that in its presence, work can be extracted from a thermal reservoir while if the coherences vanish, then no work can be extracted.

Download full-text PDF

Source
http://dx.doi.org/10.1103/PhysRevE.99.042142DOI Listing

Publication Analysis

Top Keywords

master equation
8
work extracted
8
landau-zener lindblad
4
lindblad equation
4
equation work
4
work extraction
4
extraction coherences
4
coherences dynamics
4
dynamics driven
4
driven quantum
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!