Quasi-spin-wave quantum memories with a dynamical symmetry
文献类型：期刊论文
| 作者 | Liu, XF; Sun, CP ; Li, Y; Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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| 刊名 | PHYSICAL REVIEW LETTERS
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| 出版日期 | 2003 |
| 卷号 | 91期号:14页码:- |
| 关键词 | Electromagnetically Induced Transparency Nuclear-quadrupole Resonance Atomic Ensembles Light Entanglement Storage States Cavity |
| ISSN号 | 0031-9007 |
| 英文摘要 | For the two-mode exciton system formed by the quasi-spin-wave collective excitation of many Lambda atoms fixed at the lattice sites of a crystal, we discover a dynamical symmetry depicted by the semidirect product algebra SU(2)(x) over barh(2) in the large N limit with low excitations. With the help of the spectral generating algebra method, we obtain a larger class of exact zero-eigenvalue states adiabatically interpolating between the initial state of photon-type and the final state of quasi-spin-wave exciton-type. The conditions for the adiabatic passage of dark states are shown to be valid, even with the presence of the level degeneracy. These theoretical results can lead to the proposal of a new protocol for implementing quantum memory robust against quantum decoherence. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000185719500047 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13208]  |
| 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 | Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Liu, XF,Sun, CP,Li, Y,et al. Quasi-spin-wave quantum memories with a dynamical symmetry[J]. PHYSICAL REVIEW LETTERS,2003,91(14):-. |
| APA | Liu, XF,Sun, CP,Li, Y,&Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2003).Quasi-spin-wave quantum memories with a dynamical symmetry.PHYSICAL REVIEW LETTERS,91(14),-. |
| MLA | Liu, XF,et al."Quasi-spin-wave quantum memories with a dynamical symmetry".PHYSICAL REVIEW LETTERS 91.14(2003):-. |
入库方式： OAI收割
来源：理论物理研究所
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