Generation of GHZ state and cluster state with atomic ensembles via the dipole–blockade mechanism

doi:10.1088/1674-1056/19/9/090316

中国物理B ›› 2010, Vol. 19 ›› Issue (9): 90316-090316.doi: 10.1088/1674-1056/19/9/090316

Generation of GHZ state and cluster state with atomic ensembles via the dipole–blockade mechanism

顾永建¹, 倪彬彬², 陈晓东², 梁鸿辉², 林秀², 林秀敏²

(1)Department of Physics, Ocean University of China, Qingdao 266100, China; (2)School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China

收稿日期:2009-10-22 修回日期:2009-12-19 出版日期:2010-09-15 发布日期:2010-09-15
基金资助:
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).

Generation of GHZ state and cluster state with atomic ensembles via the dipole–blockade mechanism

Ni Bin-Bin(倪彬彬)^a), Gu Yong-Jian(顾永建)^b), Chen Xiao-Dong(陈晓东)^a), Liang Hong-Hui(梁鸿辉)^a), Lin Xiu(林秀)^a), and Lin Xiu-Min(林秀敏)^a)†

^a School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China; ^b Department of Physics, Ocean University of China, Qingdao 266100, China

Received:2009-10-22 Revised:2009-12-19 Online:2010-09-15 Published:2010-09-15
Supported by:
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).

摘要/Abstract

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.

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.

Key words: dipole–blockade mechanism, n-qubit GHZ state, n-qubit cluster

中图分类号:

0367

倪彬彬, 顾永建, 陈晓东, 梁鸿辉, 林秀, 林秀敏. Generation of GHZ state and cluster state with atomic ensembles via the dipole–blockade mechanism[J]. 中国物理B, 2010, 19(9): 90316-090316.

Ni Bin-Bin(倪彬彬), Gu Yong-Jian(顾永建), Chen Xiao-Dong(陈晓东), Liang Hong-Hui(梁鸿辉), Lin Xiu(林秀), and Lin Xiu-Min(林秀敏). Generation of GHZ state and cluster state with atomic ensembles via the dipole–blockade mechanism[J]. Chin. Phys. B, 2010, 19(9): 90316-090316.

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Generation of GHZ state and cluster state with atomic ensembles via the dipole–blockade mechanism

Generation of GHZ state and cluster state with atomic ensembles via the dipole–blockade mechanism

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