Informational work storage in quantum thermodynamics

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/112437

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题名:	Informational work storage in quantum thermodynamics
作者:	Shang-Yung Wang
关键词:	quantum thermodynamics;work extraction and storage;thermodynamic resource theory
日期:	2019-06-04
上传时间:	2017-12-19 02:11:09 (UTC+8)
出版者:	MDPI
摘要:	We present a critical examination of the difficulties with the quantum versions of a lifted weight that are widely used as work storage systems in quantum thermodynamics. To overcome those difficulties, we turn to the strong connections between information and thermodynamics illuminated by Szilard's engine and Landauer's principle, and consider the concept of informational work storage. This concept is in sharp contrast with the usual one of mechanical work storage underlying the idealization of a quantum weight. An informational work storage system based on maximally mixed qubits that does not act as an entropy sink and is capable of truly distinguishing work from heat is studied. Applying it to the problem of single-shot work extraction in various extraction schemes, we show that for a given system state the maximum extractable work is independent of extraction scheme, in accordance with the second law of thermodynamics.
關聯:	Quantum Reports 1(1), p.37-49
DOI:	10.3390/quantum1010005
显示于类别:	[物理學系暨研究所] 期刊論文

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