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

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

2005-02-13

arxiv.org/abs/quant-ph/0502075v4

Phys. Lett. A Vol. 368, Page 215 (2007)

Physics

Quantum Physics

v3: 7 pages, 5 figures. Published in Physics Letters A

Scientific paper

10.1016/j.physleta.2007.04.010

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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