Fundamental Limits on Anomalous Energy Flows in Correlated Quantum Systems
(2024) In Physical Review Letters 132(14).- Abstract
In classical thermodynamics energy always flows from the hotter system to the colder one. However, if these systems are initially correlated, the energy flow can reverse, making the cold system colder and the hot system hotter. This intriguing phenomenon is called "anomalous energy flow"and shows the importance of initial correlations in determining physical properties of thermodynamic systems. Here we investigate the fundamental limits of this effect. Specifically, we find the optimal amount of energy that can be transferred between quantum systems under closed and reversible dynamics, which then allows us to characterize the anomalous energy flow. We then explore a more general scenario where the energy flow is mediated by an... (More)
In classical thermodynamics energy always flows from the hotter system to the colder one. However, if these systems are initially correlated, the energy flow can reverse, making the cold system colder and the hot system hotter. This intriguing phenomenon is called "anomalous energy flow"and shows the importance of initial correlations in determining physical properties of thermodynamic systems. Here we investigate the fundamental limits of this effect. Specifically, we find the optimal amount of energy that can be transferred between quantum systems under closed and reversible dynamics, which then allows us to characterize the anomalous energy flow. We then explore a more general scenario where the energy flow is mediated by an ancillary quantum system that acts as a catalyst. We show that this approach allows for exploiting previously inaccessible types of correlations, ultimately resulting in an energy transfer that surpasses our fundamental bound. To demonstrate these findings, we use a well-studied quantum optics setup involving two atoms coupled to an optical cavity.
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- author
- Lipka-Bartosik, Patryk ; Diotallevi, Giovanni Francesco LU and Bakhshinezhad, Pharnam
- organization
- publishing date
- 2024-04-05
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 132
- issue
- 14
- article number
- 140402
- publisher
- American Physical Society
- external identifiers
-
- scopus:85189362573
- pmid:38640379
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.132.140402
- language
- English
- LU publication?
- yes
- id
- 5648ed92-6e4f-49e8-940d-a01b5000cbba
- date added to LUP
- 2024-04-23 10:28:41
- date last changed
- 2024-06-18 15:24:31
@article{5648ed92-6e4f-49e8-940d-a01b5000cbba,
abstract = {{<p>In classical thermodynamics energy always flows from the hotter system to the colder one. However, if these systems are initially correlated, the energy flow can reverse, making the cold system colder and the hot system hotter. This intriguing phenomenon is called "anomalous energy flow"and shows the importance of initial correlations in determining physical properties of thermodynamic systems. Here we investigate the fundamental limits of this effect. Specifically, we find the optimal amount of energy that can be transferred between quantum systems under closed and reversible dynamics, which then allows us to characterize the anomalous energy flow. We then explore a more general scenario where the energy flow is mediated by an ancillary quantum system that acts as a catalyst. We show that this approach allows for exploiting previously inaccessible types of correlations, ultimately resulting in an energy transfer that surpasses our fundamental bound. To demonstrate these findings, we use a well-studied quantum optics setup involving two atoms coupled to an optical cavity.</p>}},
author = {{Lipka-Bartosik, Patryk and Diotallevi, Giovanni Francesco and Bakhshinezhad, Pharnam}},
issn = {{0031-9007}},
language = {{eng}},
month = {{04}},
number = {{14}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Fundamental Limits on Anomalous Energy Flows in Correlated Quantum Systems}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.132.140402}},
doi = {{10.1103/PhysRevLett.132.140402}},
volume = {{132}},
year = {{2024}},
}