从量子芝诺效应到逆量子芝诺效应。

From the quantum zeno to the inverse quantum zeno effect.

作者信息

Facchi P, Nakazato H, Pascazio S

机构信息

Atominstitut der Osterreichischen Universitäten, Stadionallee 2, A-1020, Vienna, Austria.

出版信息

Phys Rev Lett. 2001 Mar 26;86(13):2699-703. doi: 10.1103/PhysRevLett.86.2699.

DOI:10.1103/PhysRevLett.86.2699

PMID:11290018

Abstract

The temporal evolution of an unstable quantum mechanical system undergoing repeated measurements is investigated. In general, by changing the time interval between successive measurements, the decay can be accelerated (inverse quantum Zeno effect) or slowed down (quantum Zeno effect), depending on the features of the interaction Hamiltonian. A geometric criterion is proposed for a transition to occur between these two regimes.

摘要

研究了一个经历重复测量的不稳定量子力学系统的时间演化。一般来说，通过改变连续测量之间的时间间隔，根据相互作用哈密顿量的特征，衰变可以加速（逆量子芝诺效应）或减慢（量子芝诺效应）。提出了一个几何判据，用于在这两种状态之间发生转变。