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Transient dynamics of Ohmic dissipative two-level systems driven by dc-ac fields
Wang, H; Zhao, XG; Wang, H , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.
1996
发表期刊PHYSICS LETTERS A
ISSN0375-9601
卷号217期号:41004页码:232-240
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.
部门归属ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
关键词2-state System Quantum Coherence Bistable System 2-level System Low-frequency Localization Electron Laser Generation Phonons
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12612
专题理论物理所1978-2010年知识产出
通讯作者Wang, H , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.
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Wang, H,Zhao, XG,Wang, H , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA.. Transient dynamics of Ohmic dissipative two-level systems driven by dc-ac fields[J]. PHYSICS LETTERS A,1996,217(41004):232-240.
APA Wang, H,Zhao, XG,&Wang, H , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING 100080,PEOPLES R CHINA..(1996).Transient dynamics of Ohmic dissipative two-level systems driven by dc-ac fields.PHYSICS LETTERS A,217(41004),232-240.
MLA Wang, H,et al."Transient dynamics of Ohmic dissipative two-level systems driven by dc-ac fields".PHYSICS LETTERS A 217.41004(1996):232-240.
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