Volume 82, Number 5, June 2008
|Number of page(s)||6|
|Published online||23 May 2008|
Non-Markovian effects on the geometric phase
School of Physics and Optoelectronic Technology, Dalian University of Technology - Dalian 116024, China
Accepted: 9 April 2008
The geometric phases of a two-level atom interacting with non-Markovian environments are calculated and the non-Markovian effects on the geometric phases are discussed in this paper. Three kinds of methods that describe the non-Markovian process, projection superoperator technique, memory kernel master equation and post-Markovian master equation, are used in the discussions. The results show that when the dissipation rate is large, the non-Markovian effects change the geometric phase more strikingly than the small one.
PACS: 03.65.Vf – Phases: geometric; dynamic or topological / 03.65.Yz – Decoherence; open systems; quantum statistical methods / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps
© EPLA, 2008
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