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Quasi-spin-wave quantum memories with a dynamical symmetry
Sun, CP; Li, Y; Liu, XF; Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
2003
发表期刊PHYSICAL REVIEW LETTERS
ISSN0031-9007
卷号91期号:14页码:-
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.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Peking Univ, Dept Math, Beijing 100871, Peoples R China
关键词Electromagnetically Induced Transparency Nuclear-quadrupole Resonance Atomic Ensembles Light Entanglement Storage States Cavity
学科领域Physics
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收录类别SCI
WOS记录号WOS:000185719500047
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被引频次:110[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13208
专题理论物理所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
Sun, CP,Li, Y,Liu, XF,et al. Quasi-spin-wave quantum memories with a dynamical symmetry[J]. PHYSICAL REVIEW LETTERS,2003,91(14):-.
APA Sun, CP,Li, Y,Liu, XF,&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 Sun, CP,et al."Quasi-spin-wave quantum memories with a dynamical symmetry".PHYSICAL REVIEW LETTERS 91.14(2003):-.
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