Quantum Szilard Engine

被引：182

作者：

Kim, Sang Wook ^{[1
,2
]}

Sagawa, Takahiro ^{[2
]}

De Liberato, Simone ^{[2
]}

Ueda, Masahito ^{[2
]}

机构：

[1] Pusan Natl Univ, Dept Phys Educ, Pusan 609735, South Korea

[2] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 07期

关键词：

MAXWELLS DEMON; INFORMATION; ENTROPY;

D O I：

10.1103/PhysRevLett.106.070401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Szilard engine (SZE) is the quintessence of Maxwell's demon, which can extract the work from a heat bath by utilizing information. We present the first complete quantum analysis of the SZE, and derive an analytic expression of the quantum-mechanical work performed by a quantum SZE containing an arbitrary number of molecules, where it is crucial to regard the process of insertion or removal of a wall as a legitimate thermodynamic process. We find that more (less) work can be extracted from the bosonic (fermionic) SZE due to the indistinguishability of identical particles.

引用

页数：4

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