Quantum Szilard Engine
Quantum Szilard Engine
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DOI:
10.1103/physrevlett.106.070401
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发表时间:
2011-02-14
影响因子:
8.6
通讯作者:
Ueda, Masahito
中科院分区:
文献类型:
--
作者:
Kim, Sang Wook;Sagawa, Takahiro;Ueda, Masahito
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.