Volume 125, Number 2, January 2019
|Number of page(s)||7|
|Published online||21 February 2019|
Necessarily transient quantum refrigerator
1 Harish-Chandra Research Institute, HBNI - Chhatnag Road, Jhunsi, Allahabad - 211019, India
2 The Institute of Mathematical Sciences, HBNI, CIT Campus - Taramani, Chennai - 600113, India
3 Department of Physics, College of Science, Swansea University - Singleton Park, Swansea - SA2 8PP, UK
Received: 4 September 2018
Accepted: 22 January 2019
We show that it is possible to construct a quantum absorption refrigerator that provides refrigeration only in the transient regime, by using three interacting qubits, each of which is also interacting with a local heat bath. Though the machine does not provide any effective cooling in the steady state, significant cooling of a qubit can be achieved much before the system reaches its steady state. We also demonstrate a scenario where the temperature of the qubit that has to be cooled, decreases monotonically to its minimum steady-state temperature. This facilitates bypassing of precise time control in cooling. We study the behaviour of the ratio of the heat currents of the machine for both the scenarios. The results remain qualitatively unchanged for different models of thermal baths. We also comment on the temporal behaviour of bipartite and multipartite quantum correlations present in the system, when transient cooling without steady-state cooling takes place.
PACS: 03.67.-a – Quantum information / 03.65.Aa – Quantum systems with finite Hilbert space / 05.70.Ln – Nonequilibrium and irreversible thermodynamics
© EPLA, 2019
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.