Experimental Verification of the Work Fluctuation-Dissipation Relation for Information-to-Work Conversion
(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
- Barker, David LU ; Scandi, Matteo ; Lehmann, Sebastian LU ; Thelander, Claes LU ; Dick, Kimberly A. LU ; Perarnau-Llobet, Martí and Maisi, Ville F. LU
- organization
- publishing date
- 2022-01-28
- 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
- 2024-09-19 21:40:30
@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}}, }