Spontaneous emission and lame shift in photonic crystals
文献类型：期刊论文
| 作者 | Wang, XH ; Gu, BY ; Kivshar, YS |
| 刊名 | SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
 |
| 出版日期 | 2005 |
| 卷号 | 6期号:7页码:814 |
| 关键词 | BAND-GAP QUANTUM OPTICS INFRARED WAVELENGTHS DIELECTRIC MEDIA FLUORESCENCE RESERVOIRS EQUATIONS RADIATION LIGHT STATE |
| ISSN号 | 1468-6996 |
| 通讯作者 | Wang, XH (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | Being motivated by the controversial results based on two dispersion models and Weisskopf-Wigner approximation (WWA), we introduce, for the first time to our knowledge, the position-dependent photon-atom interaction into the Green function method of the evolution operator and develop a universal theoretical approach to study spontaneous emission of atoms in photonic crystals (PCs). A position-sensitive generalized Lorentzian formalism (non-Lorentzian shape) for the decay of an excited atom in PCs is derived, and an exact numerical method for calculating the local coupling strength, proportional to the photonic local density of state (LDOS), is presented. For weak interaction PCs with pseudo gaps, the generalized Lorentzian formalism may be reduced to the famous Lorentzian spectrum. In this case, we introduce a lifetime distribution function for an assembly of atoms and find that it depends strongly on the atomic configuration in space, which clarifies successfully the tremendous discrepancy between different experiments. For the PCs with large full gaps, we find that the atomic position can fundamentally change the decay behavior of an excited atom: in strong interaction positions, the atomic decay is non-classical or exhibits an envelope-damped Rabi oscillation, while in weak interaction positions the WWA is valid. Recently, we also predicted giant Lamb shifts for hydrogen atoms in PCs, and revealed that in inhomogeneous electromagnetic environment, the dominant contribution to the Lamb shift comes from real photon emission, while the contribution from emission and reabsorption of virtual photon is negligible, in vast contrast with the case of free space where the virtual photon processes play a key role. (c) 2005 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52964]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang, XH,Gu, BY,Kivshar, YS. Spontaneous emission and lame shift in photonic crystals[J]. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS,2005,6(7):814. |
| APA | Wang, XH,Gu, BY,&Kivshar, YS.(2005).Spontaneous emission and lame shift in photonic crystals.SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS,6(7),814. |
| MLA | Wang, XH,et al."Spontaneous emission and lame shift in photonic crystals".SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 6.7(2005):814. |
入库方式： OAI收割
来源：物理研究所
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