| Controlled Teleportation of an Arbitrary Multi-Qudit State in a General Form with d-Dimensional Greenberger-Horne-Zeilinger States |
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| 作者姓名： | 李熙涵 邓富国 周宏余 |
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| 作者单位： | [1]The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875 [2]Institute of Low Energy Nuclear Physics, and Department of Material Science and Engineering, Beijing Normal University, Beijing 100875 [3]Beijing Radiation Center, Beijing 100875 |
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| 基金项目： | ＊ Supported by the National Natural Science Foundation of China under Grant Nos 10604008 and 10435020, and Beijing Education Committee under Grant No XK100270454. |
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| 摘 要： | A general scheme for controlled teleportation of an arbitrary multi-qudit state with d-dimensional Greenberger- Horne--Zeilinger （GHZ） states is proposed. For an arbitrary m-qudit state, the sender Alice performs m generalized Bell-state projective measurements on her 2m qudits and the controllers need only take some single-particle measurements. The receiver Charlie can reconstruct the unknown m-qudit state by performing some single-qudit unitary operations on her particles if she cooperates with all the controllers. As the quantum channel is a sequence of maximally entangled GHZ states, the intrinsic efticiency for qudits in this scheme approaches 100% in principle.
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| 关 键 词： | GHZ状态 隐形传输 控制系统 物理学 |
| 收稿时间： | 2006-12-7 |
| 修稿时间： | 2006-12-07 |
Controlled Teleportation of an Arbitrary Multi-Qudit State in a General Form with d-Dimensional Greenberger--Horne--Zeilinger States |
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| LI Xi-Han,DENG Fu-Guo,ZHOU Hong-Yu.Controlled Teleportation of an Arbitrary Multi-Qudit State in a General Form with d-Dimensional Greenberger-Horne-Zeilinger States[J].Chinese Physics Letters,2007,24(5):1151-1153. |
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| Authors: | LI Xi-Han DENG Fu-Guo ZHOU Hong-Yu |
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| Institution: | 1 The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875; 2Institute of Low Energy Nuclear Physics, and Department of Material Science and Engineering, Beijing Normal University, Beijing 100875 ;3Beijing Radiation Center, Beijing 100875 |
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| Abstract: | A general scheme for controlled teleportation of an arbitrary multi-qudit state with d-dimensional Greenberger--Horne--Zeilinger (GHZ) states is proposed. For an arbitrary m-qudit state, the sender Alice performs m generalized Bell-state projective measurements on her 2m qudits and the controllers need only take some single-particle measurements. The receiver Charlie can reconstruct the unknown m-qudit state by performing some single-qudit unitary operations on her particles if she cooperates with all the controllers. As the quantum channel is a sequence of maximally entangled GHZ states, the intrinsic efficiency for qudits in this scheme approaches 100% in principle. |
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| Keywords: | 03 67 Hk 03 65 Ud |
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