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Sun, CP; Li, Y; Liu, XF; Sun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
Quasi-spin-wave quantum memories with a dynamical symmetry
Source PublicationPHYSICAL REVIEW LETTERS
KeywordElectromagnetically Induced Transparency Nuclear-quadrupole Resonance Atomic Ensembles Light Entanglement Storage States Cavity
AbstractFor 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.
2003
ISSN0031-9007
Volume91Issue:14Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:112[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13208
Collection理论物理所科研产出_SCI论文
Corresponding AuthorSun, CP , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
Recommended Citation
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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