| Generation of GHZ state and cluster state with atomic ensembles via the dipole-blockade mechanism |
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| 作者姓名： | 倪彬彬 顾永建 陈晓东 梁鸿辉 林秀 林秀敏 |
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| 作者单位： | School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China;Department of Physics, Ocean University of China, Qingdao 266100, China;School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China;School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China;School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China;School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos. 60878059, 10947147, 60677044, and 10574022), the Natural Science Foundation of Fujian Province of China (Grant No. 2007J0002). |
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| 摘 要： | This paper proposes scalable schemes to generate the Greenberger-Horne-Zeilinger (GHZ) state and the cluster state with atomic ensembles via the dipole blockade mechanism on an atom chip, where the qubit is not carried by a single atom but an atomic ensemble. In the protocols, multiqubit entangled states are determinately prepared. Needlessness for single-photon source further decreases the complexity of the experiment. Based on the present laboratory technique, the schemes may be realized. The achieved results reveal a prospect for large-scale quantum communication and quantum computation.
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| 关 键 词： | dipole-blockade mechanism n-qubit GHZ state n-qubit cluster |
| 收稿时间： | 2009-10-22 |
Generation of GHZ state and cluster state with atomic ensembles via the dipole—blockade mechanism |
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| Ni Bin-Bin,Gu Yong-Jian,Chen Xiao-Dong,Liang Hong-Hui,Lin Xiu and Lin Xiu-Min.Generation of GHZ state and cluster state with atomic ensembles via the dipole-blockade mechanism[J].Chinese Physics B,2010,19(9):90316-090316. |
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| Authors: | Ni Bin-Bin Gu Yong-Jian Chen Xiao-Dong Liang Hong-Hui Lin Xiu and Lin Xiu-Min |
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| Institution: | Department of Physics, Ocean University of China, Qingdao 266100, China; School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China |
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| Abstract: | This paper proposes scalable schemes to generate the Greenberger--Horne--Zeilinger (GHZ) state and the cluster state with atomic ensembles via the dipole blockade mechanism on an atom chip, where the qubit is not carried by a single atom but an atomic ensemble. In the protocols, multiqubit entangled states are determinately prepared. Needlessness for single-photon source further decreases the complexity of the experiment. Based on the present laboratory technique, the schemes may be realized. The achieved results reveal a prospect for large-scale quantum communication and quantum computation. |
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| Keywords: | dipole--blockade mechanism n-qubit GHZ state n-qubit cluster |
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