Maxwell's demon across the quantum-to-classical transition
Annby-Andersson, Bjorn LU ; Bhattacharyya, Debankur ; Bakhshinezhad, Pharnam ; Holst, Daniel LU
; De Sousa, Guilherme
; Jarzynski, Christopher
; Samuelsson, Peter
LU
and Potts, Patrick P.
LU
(2024)
In Physical Review Research
6(4).
- Abstract
In scenarios coined Maxwell's demon, information on microscopic degrees of freedom is used to seemingly violate the second law of thermodynamics. This has been studied in the classical as well as the quantum domain. In this paper, we study an implementation of Maxwell's demon that can operate in both domains. In particular, we investigate information-to-work conversion over the quantum-to-classical transition. The demon continuously measures the charge state of a double quantum dot and uses this information to guide electrons against a voltage bias by tuning the on-site energies of the dots. Coherent tunneling between the dots allows for the buildup of quantum coherence in the system. Under strong measurements, the coherence is... (More)
In scenarios coined Maxwell's demon, information on microscopic degrees of freedom is used to seemingly violate the second law of thermodynamics. This has been studied in the classical as well as the quantum domain. In this paper, we study an implementation of Maxwell's demon that can operate in both domains. In particular, we investigate information-to-work conversion over the quantum-to-classical transition. The demon continuously measures the charge state of a double quantum dot and uses this information to guide electrons against a voltage bias by tuning the on-site energies of the dots. Coherent tunneling between the dots allows for the buildup of quantum coherence in the system. Under strong measurements, the coherence is suppressed, and the system is well-described by a classical model. As the measurement strength is further increased, the Zeno effect prohibits interdot tunneling. A Zeno-like effect is also observed for weak measurements, where measurement errors lead to fluctuations in the on-site energies, dephasing the system. We anticipate similar behaviors in other quantum systems under continuous measurement and feedback control, making our results relevant for implementations in quantum technology and quantum control.
(Less)
- author
- Annby-Andersson, Bjorn
LU
; Bhattacharyya, Debankur
; Bakhshinezhad, Pharnam
; Holst, Daniel
LU
; De Sousa, Guilherme
; Jarzynski, Christopher
; Samuelsson, Peter
LU
and Potts, Patrick P.
LU
- organization
- publishing date
- 2024-10
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Research
- volume
- 6
- issue
- 4
- article number
- 043216
- publisher
- American Physical Society
- external identifiers
-
- scopus:85210739610
- ISSN
- 2643-1564
- DOI
- 10.1103/PhysRevResearch.6.043216
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
- id
- 5e241a7c-696c-46e1-b50c-66fa2489c33b
- date added to LUP
- 2025-05-27 21:37:45
- date last changed
- 2025-05-28 09:24:45
@article{5e241a7c-696c-46e1-b50c-66fa2489c33b,
abstract = {{<p>In scenarios coined Maxwell's demon, information on microscopic degrees of freedom is used to seemingly violate the second law of thermodynamics. This has been studied in the classical as well as the quantum domain. In this paper, we study an implementation of Maxwell's demon that can operate in both domains. In particular, we investigate information-to-work conversion over the quantum-to-classical transition. The demon continuously measures the charge state of a double quantum dot and uses this information to guide electrons against a voltage bias by tuning the on-site energies of the dots. Coherent tunneling between the dots allows for the buildup of quantum coherence in the system. Under strong measurements, the coherence is suppressed, and the system is well-described by a classical model. As the measurement strength is further increased, the Zeno effect prohibits interdot tunneling. A Zeno-like effect is also observed for weak measurements, where measurement errors lead to fluctuations in the on-site energies, dephasing the system. We anticipate similar behaviors in other quantum systems under continuous measurement and feedback control, making our results relevant for implementations in quantum technology and quantum control.</p>}},
author = {{Annby-Andersson, Bjorn and Bhattacharyya, Debankur and Bakhshinezhad, Pharnam and Holst, Daniel and De Sousa, Guilherme and Jarzynski, Christopher and Samuelsson, Peter and Potts, Patrick P.}},
issn = {{2643-1564}},
language = {{eng}},
number = {{4}},
publisher = {{American Physical Society}},
series = {{Physical Review Research}},
title = {{Maxwell's demon across the quantum-to-classical transition}},
url = {{http://dx.doi.org/10.1103/PhysRevResearch.6.043216}},
doi = {{10.1103/PhysRevResearch.6.043216}},
volume = {{6}},
year = {{2024}},
}