Zeno and Anti Zeno effect for a two level system in a squeezed bath

Details Zeno and Anti Zeno effect for a two level system in a squeezed bath Zeno and Anti Zeno effect for a two level system in a squeezed bath

2005-10-27

arxiv.org/abs/quant-ph/0510214v2

Physics

Quantum Physics

18 pages, 7 figures;added references for section 4;changes in the nomenclature

Scientific paper

10.1103/PhysRevA.73.042113

We discuss the appearance of Zeno (QZE) or anti-Zeno (QAE) effect in an exponentially decaying system. We consider the quantum dynamics of a continuously monitored two level system interacting with a squeezed bath. We find that the behavior of the system depends critically on the way in which the squeezed bath is prepared. For specific choices of the squeezing phase the system shows Zeno or anti-Zeno effect in conditions for which it would decay exponentially if no measurements were done. This result allows for a clear interpretation in terms of the equivalent spin system interacting with a fictitious magnetic field.

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