Minimally Dissipative Information Erasure in a Quantum Dot via Thermodynamic Length
(2022) In Physical Review Letters 129(27).- Abstract
In this Letter, we explore the use of thermodynamic length to improve the performance of experimental protocols. In particular, we implement Landauer erasure on a driven electron level in a semiconductor quantum dot, and compare the standard protocol in which the energy is increased linearly in time with the one coming from geometric optimization. The latter is obtained by choosing a suitable metric structure, whose geodesics correspond to optimal finite-time thermodynamic protocols in the slow driving regime. We show experimentally that geodesic drivings minimize dissipation for slow protocols, with a bigger improvement as one approaches perfect erasure. Moreover, the geometric approach also leads to smaller dissipation even when the... (More)
In this Letter, we explore the use of thermodynamic length to improve the performance of experimental protocols. In particular, we implement Landauer erasure on a driven electron level in a semiconductor quantum dot, and compare the standard protocol in which the energy is increased linearly in time with the one coming from geometric optimization. The latter is obtained by choosing a suitable metric structure, whose geodesics correspond to optimal finite-time thermodynamic protocols in the slow driving regime. We show experimentally that geodesic drivings minimize dissipation for slow protocols, with a bigger improvement as one approaches perfect erasure. Moreover, the geometric approach also leads to smaller dissipation even when the time of the protocol becomes comparable with the equilibration timescale of the system, i.e., away from the slow driving regime. Our results also illustrate, in a single-electron device, a fundamental principle of thermodynamic geometry: optimal finite-time thermodynamic protocols are those with constant dissipation rate along the process.
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- author
- Scandi, Matteo ; Barker, David LU ; Lehmann, Sebastian LU ; Dick, Kimberly A. LU ; Maisi, Ville F. LU and Perarnau-Llobet, Martí
- organization
- publishing date
- 2022-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 129
- issue
- 27
- article number
- 270601
- publisher
- American Physical Society
- external identifiers
-
- scopus:85145356011
- pmid:36638287
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.129.270601
- language
- English
- LU publication?
- yes
- id
- 8afbd72a-aa4a-4427-b55f-9da24934b683
- date added to LUP
- 2023-01-16 14:34:55
- date last changed
- 2024-06-13 01:43:55
@article{8afbd72a-aa4a-4427-b55f-9da24934b683,
abstract = {{<p>In this Letter, we explore the use of thermodynamic length to improve the performance of experimental protocols. In particular, we implement Landauer erasure on a driven electron level in a semiconductor quantum dot, and compare the standard protocol in which the energy is increased linearly in time with the one coming from geometric optimization. The latter is obtained by choosing a suitable metric structure, whose geodesics correspond to optimal finite-time thermodynamic protocols in the slow driving regime. We show experimentally that geodesic drivings minimize dissipation for slow protocols, with a bigger improvement as one approaches perfect erasure. Moreover, the geometric approach also leads to smaller dissipation even when the time of the protocol becomes comparable with the equilibration timescale of the system, i.e., away from the slow driving regime. Our results also illustrate, in a single-electron device, a fundamental principle of thermodynamic geometry: optimal finite-time thermodynamic protocols are those with constant dissipation rate along the process.</p>}},
author = {{Scandi, Matteo and Barker, David and Lehmann, Sebastian and Dick, Kimberly A. and Maisi, Ville F. and Perarnau-Llobet, Martí}},
issn = {{0031-9007}},
language = {{eng}},
number = {{27}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Minimally Dissipative Information Erasure in a Quantum Dot via Thermodynamic Length}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.129.270601}},
doi = {{10.1103/PhysRevLett.129.270601}},
volume = {{129}},
year = {{2022}},
}