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

• Authors: Afshin Shafiee , Arash Tirandaz
• Languages of publication: EN

Abstracts

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.

Keywords

EN

decoherence; quantum to classical transition; quantum flipping; decoherence time

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2011
• Volume: 9
• Issue: 6
• Pages: 1410-1420

Dates

published

1 - 12 - 2011

online

15 - 10 - 2011

Contributors

author

Afshin Shafiee

• Research Group on Foundation of Quantum Theory and Information, Department of Chemistry, Sharif University of Technology, P.O.Box 11365-9516, Tehran, Iran

author

Arash Tirandaz

• Research Group on Foundation of Quantum Theory and Information, Department of Chemistry, Sharif University of Technology, P.O.Box 11365-9516, Tehran, Iran

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Identifiers

DOI

10.2478/s11534-011-0047-y