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题名: Transient dynamics of Ohmic dissipative two-level systems driven by dc-ac fields
作者: Wang, H ;  Zhao, XG
刊名: PHYSICS LETTERS A
出版日期: 1996
卷号: 217, 期号:41004, 页码:232-240
关键词: 2-STATE SYSTEM ;  QUANTUM COHERENCE ;  BISTABLE SYSTEM ;  2-LEVEL SYSTEM ;  LOW-FREQUENCY ;  LOCALIZATION ;  ELECTRON ;  LASER ;  GENERATION ;  PHONONS
学科分类: Physics
通讯作者: Wang, H , CHINESE 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: Transient dynamics of a biased two-level system with Ohmic dissipation driven by a high-frequency laser field is studied within the noninteracting-blip approximation. It is found that in the low temperature limit, if the friction parameter ct is between 1/2 and 1, the rate constant for the tunneling of a system particle will increase with the intensity and frequency of the field, and the lower frequencies will be in favor of localization of the particle in the metastable state, For 0 < alpha < 1/2, quantum coherence is observed, and the transition temperature from the coherent to incoherent motion is found to depend on the field intensity. When the laser field intensity parameter approaches the zeros of the Nth Bessel function, the coherence disappears. This transition from coherent to incoherent motion oscillating with the intensity of the field gives rise to a cascade of transitions at different temperatures.
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/311006/12612
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:
Wang, H,Zhao, XG. Transient dynamics of Ohmic dissipative two-level systems driven by dc-ac fields[J]. PHYSICS LETTERS A,1996,217(41004):232-240.
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