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arXiv:quant-ph/9906068 · Physics Letters A

Zeno effect preventing Rabi transitions onto an unstable energy level

Jürgen Audretsch, Michael B. Mensky, Alexander D. Panov

Published Oct 1, 1999• 10 citations
arXivHTMLPDF
DOI
10.1016/s0375-9601(99)00569-1

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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. The system visualizes the important role of null measurements (negative result measurements) and may serve as a good example for a truly continuous measurement. 1 1
As we know,quantum Zeno effect may appear when frequent measurements are performed on an unstable quantum system.This effect is well popular in quantum information and quantum computation.However,most of the previous discussions on quantum Zeno effect were focused on two-level systems.In order to comprehend quantum Zeno effect and prevent the transition in different quantum systems better,we verified the existence of quantum Zeno effect in three-level systems.Furthermore,the existence of quantum Zeno effect in multilevel systems could also be fully verified similarly.