Zeno effect preventing Rabi transitions onto an unstable energy level

Details Zeno effect preventing Rabi transitions onto an unstable energy level Zeno effect preventing Rabi transitions onto an unstable energy level

1999-06-18

arxiv.org/abs/quant-ph/9906068v1

Phys.Lett. A261 (1999) 44-50

Physics

Quantum Physics

13 pages, Latex, 2 EPS figures

Scientific paper

10.1016/S0375-9601(99)00569-1

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.

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