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Zeno and anti-Zeno effects in two-level systems

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Luis Aina, Alfredo (2003) Zeno and anti-Zeno effects in two-level systems. Physical review A, 67 (6). 062113_1-062113_4. ISSN 1050-2947

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Official URL: http://dx.doi.org/10.1103/PhysRevA.67.062113


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http://journals.aps.org/Publisher


Abstract

We examine the appearance of Zeno and anti-Zeno effects when the unitary evolution of a two-level system is observed. We demonstrate that, contrary to previous claims, the anti-Zeno effect can occur in two-level systems so that the observation can enhance the transition probability. Moreover, for nonresonant couplings we show that the Zeno and anti-Zeno effects always appear sequentially in the evolution of the same system: there is Zeno effect in the short-time regime and anti-Zeno effect in the long-time regime.


Item Type:Article
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©2003 The American Physical Society.

Uncontrolled Keywords:Intermittent atomic fluorescence; Quantum zeno; Single-atom; Down-conversion; Dark periods; Paradox; Jumps; Dynamics; Collapse; Light
Subjects:Sciences > Physics > Optics
ID Code:31438
Deposited On:29 Jul 2015 11:40
Last Modified:29 Jul 2015 11:40

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