REVERSIBILITY IN QUANTUM MEASUREMENT PROCESSES

被引：76

作者：

UEDA, M

KITAGAWA, M

机构：

[1] NTT Basic Research Laboratories, Musashino

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.68.3424

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A measurement process is logically reversible if the premeasurement density operator of the measured system can be calculated from the postmeasurement density operator and the readout of the measuring apparatus. We show that the continuous-measurement version of a quantum counter, unlike the conventional photon counter, performs a logically reversible measurement. The physical origin for such a distinction is found to be sensitivity to vacuum field fluctuations.

引用

页码：3424 / 3427

页数：4

共 10 条

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