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题名: QUASI-ENERGY AND FLOQUET STATES IN A TIME-PERIODIC DRIVEN 2-LEVEL SYSTEM
作者: ZHAO, XG
刊名: PHYSICAL REVIEW B
出版日期: 1994
卷号: 49, 期号:23, 页码:16753-16756
关键词: LIGHT INTERSTITIALS ;  APPROXIMATION ;  DISSIPATION ;  DIFFUSION ;  METALS ;  PHASE ;  MODEL
学科分类: Physics
通讯作者: ZHAO, XG , CHINA CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.
部门归属: ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
英文摘要: The eigenvalue problem of a time-periodic driven two-level system is investigated. The closed-form solutions for the quasienergy and the Floquet states are obtained with the help of SU(2) symmetry. A distinct advantage of this approach is that the calculations of physical quantities can be made up to any order approximations straightforwardly. To illustrate the validity of our method, we present detailed calculations for a biased double-well heterostructure driven by a laser field. Various situations for the ratio of the energy gap of the undriven system to the laser frequency are discussed, among which it is found that the exact quasienergy crossing emerges if this ratio becomes a nonzero even number. Such an effect of localization should be observable in experiments.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/11894
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
ZHAO, XG. QUASI-ENERGY AND FLOQUET STATES IN A TIME-PERIODIC DRIVEN 2-LEVEL SYSTEM[J]. PHYSICAL REVIEW B,1994,49(23):16753-16756.
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