Quantum leakage of collective excitations of atomic ensemble induced by spatial motion
文献类型：期刊论文
| 作者 | Li, Y; Yi, S ; You, L; Sun, CP; Li, Y , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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| 刊名 | SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY
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| 出版日期 | 2003 |
| 卷号 | 46期号:6页码:580-588 |
| 关键词 | Electromagnetically Induced Transparency Podolsky-rosen Channels State Teleportation Entanglement Computation |
| ISSN号 | 1672-1799 |
| 英文摘要 | We generalize the conception of quantum leakage for the atomic collective excitation states. By making use of the atomic coherence state approach, we study the influence of the atomic spatial motion on the symmetric collective states of 2-level atomic ensemble due to inhomogeneous coupling. In the macroscopic limit, we analyze the quantum decoherence of the collective atomic state by calculating the quantum leakage for a very large ensemble at a finite temperature. Our investigations show that the fidelity of the atomic system will not be good in the case of atom number N --> infinity. Therefore, quantum leakage is an inevitable problem in using the atomic ensemble as a quantum information memory. The detailed calculations shed theoretical light on quantum processing using atomic ensemble collective qubit. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000187496600003 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14176]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Li, Y , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li, Y,Yi, S,You, L,et al. Quantum leakage of collective excitations of atomic ensemble induced by spatial motion[J]. SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY,2003,46(6):580-588. |
| APA | Li, Y,Yi, S,You, L,Sun, CP,&Li, Y , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2003).Quantum leakage of collective excitations of atomic ensemble induced by spatial motion.SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY,46(6),580-588. |
| MLA | Li, Y,et al."Quantum leakage of collective excitations of atomic ensemble induced by spatial motion".SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY 46.6(2003):580-588. |
入库方式： OAI收割
来源：理论物理研究所
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