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arXiv 2109.03090cond-mat.mes-hallcond-mat.stat-mechquant-ph
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信息-功转换的功涨落-耗散关系的实验验证

Experimental verification of the work fluctuation-dissipation relation for information-to-work conversion

David Barker, Matteo Scandi, Sebastian Lehmann, Claes Thelander, Kimberly A. Dick, Martí Perarnau-Llobet, Ville F. Maisi

摘要:

我们实验研究工作波动的Szilard引擎,提取工作的信息编码为电子在半导体量子点的水平占用。我们发现,作为平均工作提取每比特的信息增加对朗道极限$k_BT \ln 2$,工作波动减少按照工作波动耗散关系。我们将结果与没有测量和反馈的协议进行比较,结果表明,当没有使用信息时,工作输出和波动同时消失,而信息到能量转换的情况下,工作量增加,波动减少。我们的工作突出了波动在信息到工作转换过程的设计中的重要性。

英文摘要:

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 towards the Landauer limit $k_BT \ln 2$, 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 work highlights the importance of fluctuations in the design of information-to-work conversion processes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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