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RESEARCH PRODUCT
Driven Appearance and Disappearance of Quantum Zeno Effect in the Dynamics of a Four-level Trapped Ion
Antonino MessinaAnna NapoliBenedetto Militellosubject
PhysicsQuantum mechanicsQuantum dynamicsIsotropyPhysical systemCavity quantum electrodynamicsGeneral Physics and AstronomyContext (language use)Trapped ion quantum computerIonQuantum Zeno effectdescription
An example of constrained unitary quantum dynamics in the context of trapped ions is given. We study a laser driven four-level ion system confined in an isotropic three-dimensional Paul microtrap. Our main result is that when two independent controllable continuous measurement processes are simultaneously present, the unitary quantum dynamics of the system can be parametrically frozen into a one-dimensional Hilbert subspace (Quantum Zeno Effect) or constrained into a two-dimensional one, at will. Conditions under which one of the two processes acts upon the physical system inhibiting the effects due to the other one, are explicitly found and discussed (Hierarchically Controlled Dynamics).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-10-01 | Fortschritte der Physik |