Comparison between Decoherence time for a Two-state Spin 1/2 System with Its Corresponding Quantum Retrieval Period
Quantum Physics
2011-07-21 v1
Abstract
We consider the evolution of a two-state quantum system (a spin 1/2 particle) in both the framework of standard quantum mechanics and under the decoherence regime. 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, utilizing the Spin-Boson model to describe the interaction of system with its environment, we derive the Born-Markov master equation to obtain the decoherence time. It is possible to show that under some legitimate conditions, one may find a potential conflict between the predictions of decoherence theory and the result observed in a typical quantum flipping experiment.
Cite
@article{arxiv.1107.3915,
title = {Comparison between Decoherence time for a Two-state Spin 1/2 System with Its Corresponding Quantum Retrieval Period},
author = {Afshin Shafiee and Arash Tirandaz},
journal= {arXiv preprint arXiv:1107.3915},
year = {2011}
}
Comments
21 pages, one figure, two appendices