Disclosing hidden information in the quantum Zeno effect: Pulsed measurement of the quantum time of arrival

被引：33

作者：

Echanobe, J. ^{[1
]}

del Campo, A. ^{[2
]}

Muga, J. G. ^{[2
]}

机构：

[1] UPV EDU, Dept Elect & Elect, Bilbao 48080, Spain

[2] UPV EDU, Dept Quim Fis, Bilbao 48080, Spain

来源：

PHYSICAL REVIEW A | 2008年 / 77卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.77.032112

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Repeated measurements of a quantum particle to check its presence in a region of space was proposed long ago [G. R. Allcock, Ann. Phys. 53, 286 (1969)] as a natural way to determine the distribution of times of arrival at the orthogonal subspace, but the method was discarded because of the quantum Zeno effect: in the limit of very frequent measurements the wave function is reflected and remains in the original subspace. We show that by normalizing the small bits of arriving (removed) norm, an ideal time distribution emerges in correspondence with a classical local-kinetic-energy distribution.

引用

页数：4

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