en
Scientific article
Open access
English

Small quantum absorption refrigerator in the transient regime: time scales, enhanced cooling and entanglement

Publication date2015
Abstract

A small quantum absorption refrigerator, consisting of three qubits, is discussed in the transient regime. We discuss time scales for coherent dynamics, damping, and approach to the steady state, and we study cooling and entanglement. We observe that cooling can be enhanced in the transient regime, in the sense that lower temperatures can be achieved compared to the steady-state regime. This is a consequence of coherent dynamics, but can occur even when this dynamics is strongly damped by the dissipative thermal environment, and we note that precise control over couplings or timing is not needed to achieve enhanced cooling. We also show that the amount of entanglement present in the refrigerator can be much larger in the transient regime compared to the steady-state. These results are of relevance to future implementations of quantum thermal machines.

Classification
  • arxiv : quant-ph
Note8 pages, 5 figures
Citation (ISO format)
BRASK, Jonatan, BRUNNER, Nicolas. Small quantum absorption refrigerator in the transient regime: time scales, enhanced cooling and entanglement. In: Physical review. E, Statistical, nonlinear, and soft matter physics, 2015, vol. 92, n° 062101. doi: 10.1103/PhysRevE.92.062101
Main files (1)
Article (Accepted version)
accessLevelPublic
Identifiers
ISSN of the journal1539-3755
570views
305downloads

Technical informations

Creation06/10/2016 12:53:00 PM
First validation06/10/2016 12:53:00 PM
Update time03/15/2023 12:27:15 AM
Status update03/15/2023 12:27:15 AM
Last indexation01/16/2024 9:03:18 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack