✦ LIBER ✦

Zeno effect preventing Rabi transitions onto an unstable energy level

✍ Scribed by Jürgen Audretsch; Michael B. Mensky; Alexander D. Panov

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 70 KB
Volume: 261
Category: Article
ISSN: 0375-9601
DOI: 10.1016/s0375-9601(99)00569-1

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✦ Synopsis

We consider a driven 2-level system with one level showing spontaneous decay to an otherwise uncoupled third level. Rabi transitions to the unstable level are strongly damped. This simple configuration can be used to demonstrate and to explore the quantum Zeno effect leading to a freezing of the system to the initial level. A comparison with repeated projection measurements is given. A treatment within a phenomenological theory of continuous measurements is sketched. Ž . The system visualizes the important role of null measurements negative result measurements and may serve as a good example for a truly continuous measurement.

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Quantum Zeno effect in the decay onto an unstable level

✍ Michael B. Mensky 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 53 KB

Under certain assumptions it is shown that the decay of level 2 of a three-level system onto level 1 is slowed down because of the further decay of level 1 onto level 0. It is argued that this phenomenon may be interpreted as a consequence Ž of the quantum Zeno effect. The reason why this may be pos