Quantum Storage Based on  Collective Excitations in Atomic Ensemble

SUN Chang-pu; LI Yong; LIU Xu-feng

doi:10.11804/NuclPhysRev.21.02.152

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SUN Chang-pu, LI Yong, LIU Xu-feng. Quantum Storage Based on Collective Excitations in Atomic Ensemble[J]. Nuclear Physics Review, 2004, 21(2): 152-156. doi: 10.11804/NuclPhysRev.21.02.152

Citation:

SUN Chang-pu, LI Yong, LIU Xu-feng. Quantum Storage Based on Collective Excitations in Atomic Ensemble[J]. Nuclear Physics Review, 2004, 21(2): 152-156. doi: 10.11804/NuclPhysRev.21.02.152

Quantum Storage Based on Collective Excitations in Atomic Ensemble

doi: 10.11804/NuclPhysRev.21.02.152

1 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China; 2 Department of Mathematics, Peking University, Beijing 100083, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2004-06-20

Abstract

In this article we reviews a new protocol of quantum memory based on the quasipin wave excitation of the Λ systems fixed the sites of lattice. This protocol tries to avoid the disadvantage of the quantum memory scheme based on free atom ensemble， the quantum decoherence induced by the quantum leakage of collective state. Especially，we discover a universal dynamic symmetry hidden in various ensemble based quantum storage scheme. To understand the significance of this work exactly， we also give a brief introduction to our systematical studies on collective symmetric excitons in quantum ensemble，which is the necessary to propose the present scheme for quantum memory.
- quantum information,
- quantum storage,
- dynamic symmetry
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Quantum Storage Based on Collective Excitations in Atomic Ensemble

doi: 10.11804/NuclPhysRev.21.02.152

1 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China; 2 Department of Mathematics, Peking University, Beijing 100083, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2004-06-20

Key words:

Abstract: In this article we reviews a new protocol of quantum memory based on the quasipin wave excitation of the Λ systems fixed the sites of lattice. This protocol tries to avoid the disadvantage of the quantum memory scheme based on free atom ensemble， the quantum decoherence induced by the quantum leakage of collective state. Especially，we discover a universal dynamic symmetry hidden in various ensemble based quantum storage scheme. To understand the significance of this work exactly， we also give a brief introduction to our systematical studies on collective symmetric excitons in quantum ensemble，which is the necessary to propose the present scheme for quantum memory.

SUN Chang-pu, LI Yong, LIU Xu-feng. Quantum Storage Based on Collective Excitations in Atomic Ensemble[J]. Nuclear Physics Review, 2004, 21(2): 152-156. doi: 10.11804/NuclPhysRev.21.02.152

Citation:

SUN Chang-pu, LI Yong, LIU Xu-feng. Quantum Storage Based on Collective Excitations in Atomic Ensemble[J]. Nuclear Physics Review, 2004, 21(2): 152-156. doi: 10.11804/NuclPhysRev.21.02.152