Strong correspondence principle for joint measurement of conjugate observables

被引：10

作者：

Di Lorenzo, A. ^{[1
]}

机构：

[1] Univ Fed Uberlandia, Inst Fis, BR-38400902 Uberlandia, MG, Brazil

来源：

PHYSICAL REVIEW A | 2011年 / 83卷 / 04期

关键词：

INCOMPATIBLE OBSERVABLES; UNCERTAINTY PRINCIPLE; MOMENTUM OBSERVABLES; QUANTUM-MECHANICS; POSITION; PHASE; DISTURBANCE; VARIABLES; ACCURACY;

D O I：

10.1103/PhysRevA.83.042104

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

It is demonstrated that the statistics for a joint measurement of two conjugate variables in quantum mechanics are expressed through an equation identical to the classical one, provided that joint classical probabilities are replaced by Wigner functions and that the interaction between the system and the detectors is accounted for. This constitutes an extension of Ehrenfest's correspondence principle and is thereby dubbed the strong correspondence principle. Furthermore, it is proved that the detectors provide an additive term to all the cumulants and that if they are prepared in a Gaussian state they contribute only to the first and second cumulants.

引用

页数：5

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