Observing the progressive decoherence of the ''meter'' in a quantum measurement

被引：1427

作者：

Brune, M ^{[1
]}

Hagley, E ^{[1
]}

Dreyer, J ^{[1
]}

Maitre, X ^{[1
]}

Maali, A ^{[1
]}

Wunderlich, C ^{[1
]}

Raimond, JM ^{[1
]}

Haroche, S ^{[1
]}

机构：

[1] ENS,CNRS URA 18,LAB KASTLER BROSSEL,F-75231 PARIS 05,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.77.4887

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A mesoscopic superposition of quantum states involving radiation fields with classically distinct phases was created and its progressive decoherence observed. The experiment involved Rydberg atoms interacting one at a time with a few photon coherent field trapped in a high Q microwave cavity. The mesoscopic superposition was the equivalent of an ''atom + measuring apparatus'' system in which the ''meter'' was pointing simultaneously towards two different directions - a ''Schrodinger cat.'' The decoherence phenomenon transforming this superposition into a statistical mixture was observed while it unfolded, providing a direct insight into a process at the heart of quantum measurement.

引用

页码：4887 / 4890

页数：4

共 31 条

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