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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access October 15, 2011

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

Afshin Shafiee and Arash Tirandaz
From the journal Open Physics


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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Published Online: 2011-10-15
Published in Print: 2011-12-1

© 2011 Versita Warsaw

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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