| A controlled quantum teleportation scheme of an N-particle unknown state via three-particle W1 states |
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| 作者姓名： | 修晓明 董莉 高亚军 迟锋 |
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| 作者单位： | Department of Physics, Bohai University, Jinzhou
121000, China;Department of Physics, Bohai University, Jinzhou
121000, China;Department of Physics, Bohai University, Jinzhou
121000, China;Department of Physics, Bohai University, Jinzhou
121000, China |
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| 基金项目： | Project
supported by the National Natural Science Foundation of China
(Grant No 10647101). |
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| 摘 要： | In this paper a controlled quantum teleportation scheme of an N-particle unknown state is proposed when N groups of three-particle W1 states are utilized as quantum channels. The quantum information of N-particle unknown state is transmitted from the sender to the recipient under the control of all supervisors. It can be realized with a certain probability. After the sender makes Bell-state measurements and the supervisors perform the computational basis measurements, the recipient will introduce auxiliary particles and carry out unitary transformations depending on classical information from the sender and the supervisors. Finally, the computational basis measurement will be performed by the recipient to confirm whether the teleportation succeeds or not. The successful completion of the scheme relies on all supervisors＇ cooperation. In addition, the fidelity and security of the scheme are discussed.
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| 关 键 词： | 量子信息 W1状态 量子隐形传送 量子信道 |
| 收稿时间： | 2006-10-13 |
| 修稿时间： | 2006-10-13 |
A controlled quantum teleportation scheme of an N-particle unknown state via three-particle W1 states |
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| Xiu Xiao-Ming,Dong Li,Gao Ya-Jun and Chi Feng.A controlled quantum teleportation scheme of an N-particle unknown state via three-particle W1 states[J].Chinese Physics B,2007,16(8):2194-2199. |
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| Authors: | Xiu Xiao-Ming Dong Li Gao Ya-Jun and Chi Feng |
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| Institution: | Department of Physics, Bohai University, Jinzhou 121000, China |
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| Abstract: | In this paper a controlled quantum teleportation scheme of an
N-particle unknown state is proposed when N groups of
three-particle W1 states are utilized as quantum channels.
The quantum information of N-particle unknown state is
transmitted from the sender to the recipient under the control
of all supervisors. It can be realized with a certain
probability. After the sender makes Bell-state measurements and
the supervisors perform the computational basis measurements,
the recipient will introduce auxiliary particles and carry out
unitary transformations depending on classical information from
the sender and the supervisors. Finally, the computational basis
measurement will be performed by the recipient to confirm
whether the teleportation succeeds or not. The successful
completion of the scheme relies on all supervisors' cooperation.
In addition, the fidelity and security of the scheme are
discussed. |
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| Keywords: | quantum information controlled quantum teleportation W1 state |
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