运用理想光子禁带模型实现对激发态原子系统演化的调控
文献类型：期刊论文
| 作者 | Zhang, XR ; Liang, Y; 郭义庆; Guo, YQ; Liu, H; Wu, XY; Zhang, SQ; Lu, JB; Liu, XJ; Liu, JP
|
| 刊名 | 物理学报
 |
| 出版日期 | 2018 |
| 卷号 | 67期号:9页码:94205 |
| ISSN号 | 1000-3290 |
| 关键词 | quantum control dynamic surroundings excited atom |
| DOI | 10.7498/aps.67.20172050 |
| 其他题名 | Control of evolutionary atomic system of excited atom by using ideal photonic band-gap model |
| 文献子类 | Article |
| 英文摘要 | The evolution of two-level atomic system, in which the initial state is excited state, is investigated by adjusting the structural parameters of the dynamic and static ideal photonic band-gap environment reservoir. In a static state (no modulation), we study the effects of half width, center resonant frequency, and specific gravity on the evolution of energy level population. The results show that when the half width or the specific gravity decreases, in the atomic system there happens decoherence, and the energy dissipation to the outside becomes slower. When the center resonant frequency increases, there exists no resonance between the library central resonant frequency and the atom transition frequency, then the attenuation suppression effect occurs, and the time of atomic attenuation to ground state is longer. An actual quantum system is not isolated, so it is inevitable that it interacts with its ambient environment. Owing to the influence of environment, in the system there appears an irreversible quantum decoherence phenomenon. Therefore, how to effectively suppress the decoherence of quantum system becomes an important problem in quantum information science. Linington and Garraway (2008 Phys. Rev. A 77 033831) pointed out that the evolution process of a twolevel atom quantum state can be manipulated by a dynamic dissipative environment. So, we use the dynamic cavity environment to control the evolution of spontaneous emission from an excited two-level atom. The dynamic modulation form for the center resonant frequency of the ideal photonic band-gap environment reservoir includes the rectangular single pulse, rectangular periodic pulse, and slow continuous period. Owing to the periodic modulation, the atoms are affected by different environments. On this basis, the influence of dynamic modulation form on the atomic population evolution is discussed. It is found that no matter what form the dynamic modulation is in, the attenuation inhibition in the evolution of atomic system is evident. These conclusions make the idea of using the environmental change to modulate the coherent evolution of atomic system become true. |
| WOS关键词 | SPONTANEOUS EMISSION ; CRYSTALS ; CAVITY |
| WOS研究方向 | Physics |
| 语种 | 中文 |
| CSCD记录号 | CSCD:6249311 |
| WOS记录号 | WOS:000443195000014 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286250]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhang, XR,Liang, Y,郭义庆,等. 运用理想光子禁带模型实现对激发态原子系统演化的调控[J]. 物理学报,2018,67(9):94205. |
| APA | Zhang, XR.,Liang, Y.,郭义庆.,Guo, YQ.,Liu, H.,...&Li, H.(2018).运用理想光子禁带模型实现对激发态原子系统演化的调控.物理学报,67(9),94205. |
| MLA | Zhang, XR,et al."运用理想光子禁带模型实现对激发态原子系统演化的调控".物理学报 67.9(2018):94205. |
入库方式： OAI收割
来源：高能物理研究所
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