Quantum-mechanical Maxwell's demon

被引:187
|
作者
Lloyd, S
机构
[1] D’Arbeloff Laboratory for Information Systems and Technology, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139
来源
PHYSICAL REVIEW A | 1997年 / 56卷 / 05期
关键词
D O I
10.1103/PhysRevA.56.3374
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A Maxwell's demon is a device that gets information and trades it in for thermodynamic advantage, in apparent (but not actual) contradiction to the second law of thermodynamics. Quantum-mechanical versions of Maxwell's demon exhibit features that classical versions do not: in particular, a device that gets information about a quantum system disturbs it in the process. This paper proposes experimentally realizable models of quantum Maxwell's demons, explicates their thermodynamics, and shows how the information produced by quantum measurement and by decoherence acts as a source of thermodynamic inefficiency. [S1050-2947(97)02910-7].
引用
收藏
页码:3374 / 3382
页数:9
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