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  1. 1 Open Physics

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  1. 1 2011

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  1. 1 Shafiee A.

  2. 1 Tirandaz A.

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Comparison between decoherence time for a two-state spin ½ system with its corresponding quantum retrieval period

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Shafiee A., Tirandaz A.
Open Physics
|
2011
|
vol. 9
|
issue 6
1410-1420
EN
The evolution of a two-state quantum system (a spin ½ particle) in both the framework of standard quantum mechanics and under the decoherence regime is considered. The former approach on this issue is the well-known quantum flipping process of a dichotomic system subjected to a time-dependent magnetic field. In the latter approach, the Spin-Boson model is utilized to describe the interaction of system with its environment and the Born-Markov master equation is derived to obtain the decoherence time. It is possible to show that under certain conditions, one may find a potential conflict between the predictions of decoherence theory and the result observed in a typical quantum flipping experiment.
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