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Experimental Verification of the Work Fluctuation-Dissipation Relation for Information-to-Work Conversion

Barker, David LU ; Scandi, Matteo ; Lehmann, Sebastian LU ; Thelander, Claes LU ; Dick, Kimberly A. LU ; Perarnau-Llobet, Martí and Maisi, Ville F. LU (2022) In Physical Review Letters 128(4).
Abstract

We study experimentally work fluctuations in a Szilard engine that extracts work from information encoded as the occupancy of an electron level in a semiconductor quantum dot. We show that as the average work extracted per bit of information increases toward the Landauer limit Formula Presented, the work fluctuations decrease in accordance with the work fluctuation-dissipation relation. We compare the results to a protocol without measurement and feedback and show that when no information is used, the work output and fluctuations vanish simultaneously, contrasting the information-to-energy conversion case where increasing amount of work is produced with decreasing fluctuations. Our study highlights the importance of fluctuations in the... (More)

We study experimentally work fluctuations in a Szilard engine that extracts work from information encoded as the occupancy of an electron level in a semiconductor quantum dot. We show that as the average work extracted per bit of information increases toward the Landauer limit Formula Presented, the work fluctuations decrease in accordance with the work fluctuation-dissipation relation. We compare the results to a protocol without measurement and feedback and show that when no information is used, the work output and fluctuations vanish simultaneously, contrasting the information-to-energy conversion case where increasing amount of work is produced with decreasing fluctuations. Our study highlights the importance of fluctuations in the design of information-to-work conversion processes.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
128
issue
4
article number
040602
publisher
American Physical Society
external identifiers
  • scopus:85124471085
  • pmid:35148140
ISSN
0031-9007
DOI
10.1103/PhysRevLett.128.040602
language
English
LU publication?
yes
id
2373df88-e4c5-4942-912c-0887334c7068
date added to LUP
2022-05-19 09:59:56
date last changed
2024-06-13 12:28:59
@article{2373df88-e4c5-4942-912c-0887334c7068,
  abstract     = {{<p>We study experimentally work fluctuations in a Szilard engine that extracts work from information encoded as the occupancy of an electron level in a semiconductor quantum dot. We show that as the average work extracted per bit of information increases toward the Landauer limit Formula Presented, the work fluctuations decrease in accordance with the work fluctuation-dissipation relation. We compare the results to a protocol without measurement and feedback and show that when no information is used, the work output and fluctuations vanish simultaneously, contrasting the information-to-energy conversion case where increasing amount of work is produced with decreasing fluctuations. Our study highlights the importance of fluctuations in the design of information-to-work conversion processes.</p>}},
  author       = {{Barker, David and Scandi, Matteo and Lehmann, Sebastian and Thelander, Claes and Dick, Kimberly A. and Perarnau-Llobet, Martí and Maisi, Ville F.}},
  issn         = {{0031-9007}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{4}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Experimental Verification of the Work Fluctuation-Dissipation Relation for Information-to-Work Conversion}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.128.040602}},
  doi          = {{10.1103/PhysRevLett.128.040602}},
  volume       = {{128}},
  year         = {{2022}},
}