2009 Fiscal Year Final Research Report
Study of decoherence suppression in quantum system under fluctuating environment
| Project/Area Number |
20740219
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Ochanomizu University |
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Principal Investigator |
KITAJIMA Sachiko Ochanomizu University, 大学院・人間文化創成科学研究科, 准教授 (70334571)
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| Research Collaborator |
SHIBATA Fumiaki お茶の水女子大学, 名誉教授 (20011702)
BAN Masashi お茶の水女子大学, 大学院・人間文化創成科学研究科, 教授 (50416955)
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| Project Period (FY) |
2008 – 2009
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| Research Abstract |
We study decoherence and its suppression processes for a relevant spin (qubit) system surrounded by a stochastic environment, which is represented by a two-state jump Markov process and a Gauss-Markov process. Using the methods of non -equilibrium statistical physics, we obtain exactly the reduced density matrices and characteristic functions for a relevant system.
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