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Quantum Zeno and anti-Zeno effects in an Unstable System with Two Bound State

Kavan Modi·Anil Shaji
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Abstract

We analyze the experimental observations reported by Fischer et. al. [in Phys. Rev. Lett. 87, 040402 (2001)] by considering a system of coupled unstable bound quantum states A and B. The state B is coupled to a set of continuum states C. We investigate the time evolution of A when it decays into C via B, and find that frequent measurements on A leads to both the quantum Zeno effect and the anti-Zeno effects depending on the frequency of measurements. We show that it is the presence of B which allows for the anti-Zeno effect.

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Kavan Modi, Anil Shaji. 2007-09-12. Quantum Zeno and anti-Zeno effects in an Unstable System with Two Bound State. https://doi.org/10.1016/j.physleta.2007.04.010

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