Complex weak values in quantum measurement

被引：274

作者：

Jozsa, Richard ^{[1
]}

机构：

[1] Univ Bristol, Dept Comp Sci, Bristol BS8 1UB, Avon, England

来源：

PHYSICAL REVIEW A | 2007年 / 76卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.76.044103

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In the weak value formalism of Aharonov , the weak value A(w) of any observable A is generally a complex number. We derive a physical interpretation of its value in terms of the shift in the measurement pointer's mean position and mean momentum. In particular, we show that the mean position shift contains a term jointly proportional to the imaginary part of the weak value and the rate at which the pointer is spreading in space as it enters the measurement interaction.

引用

页数：3

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