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

Autor:	Barker D; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden., Scandi M; ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels (Barcelona) 08860, Spain., Lehmann S; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden., Thelander C; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden., Dick KA; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden.; Centre for Analysis and Synthesis, Lund University, Box 124, 22100 Lund, Sweden., Perarnau-Llobet M; Département de Physique Appliquée, Université de Genéve, 1211 Genéve, Switzerland., Maisi VF; NanoLund and Solid State Physics, Lund University, Box 118, 22100 Lund, Sweden.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2022 Jan 28; Vol. 128 (4), pp. 040602.
DOI:	10.1103/PhysRevLett.128.040602
Abstrakt:	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 k_{B}Tln2, 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.
Databáze:	MEDLINE
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