The probability of successful controlled teleportation of an unknown qubit using a general three-particle state is investigated. The analytic expressions of maximal probabilities via several kinds of tripartite states...The probability of successful controlled teleportation of an unknown qubit using a general three-particle state is investigated. The analytic expressions of maximal probabilities via several kinds of tripartite states are given, including a tripartite Greenberger-Horne-Zeilinger state and a tripartite W-state.展开更多
We discuss a scheme for probabilistic and controlled teleportation of an unknown arbitrary three-particle state by constructing a peculiar non-maximally entangled state as a controlled quantum channel, which is telepo...We discuss a scheme for probabilistic and controlled teleportation of an unknown arbitrary three-particle state by constructing a peculiar non-maximally entangled state as a controlled quantum channel, which is teleported between two sides with the help of the auxiliary particle and the cooperation of the third side （Charlie） as a supervisor. In comparison with some existing schemes, on the receiver＇s side it is easy to have the sender＇s state through operating two uniform unitary transformations in turn. In addition, we also give an efficient quantum network for implementing the new scheme by means of some primitive operations.展开更多
In this paper a scheme for controlled teleportation of arbitrary high-dimensional unknown quantum states is proposed by using the generalized Bell-basis measurement and the generalized Hadamard transformation. As two ...In this paper a scheme for controlled teleportation of arbitrary high-dimensional unknown quantum states is proposed by using the generalized Bell-basis measurement and the generalized Hadamard transformation. As two special cases, two schemes of controlled teleportation of an unknown single-qutrit state and an unknown two-qutrit state are investigated in detail. In the first scheme, a maximally entangled three-qutrit state is used as the quantum channel, while in the second scheme, an entangled two-qutrit state and an entangled three-qutrit state are employed as the quantum channels. In these schemes, an unknown qutrit state can be teleported to either one of two receivers, but only one of them can reconstruct the qutrit state with the help of the other. Based on the case of qutrits, a scheme of controlled teleportation of an unknown qudit state is presented.展开更多
本文提出了基于单控制方的可控量子网络编码方案,实现对传统量子网络编码方案中接收方的解码控制.该方案以经典XQQ(Crossing Two Qubits)协议为基础,引入可控隐形传态的控制方到网络编码模型当中,对两个接收方的解码实现控制.方案分析表...本文提出了基于单控制方的可控量子网络编码方案,实现对传统量子网络编码方案中接收方的解码控制.该方案以经典XQQ(Crossing Two Qubits)协议为基础,引入可控隐形传态的控制方到网络编码模型当中,对两个接收方的解码实现控制.方案分析表明,这种新型方案实现了在没有控制方允许的情况下,即使攻击者获得了接收方全部信息也无法解码获得传输的量子信息,从而提高了量子网络中信息传输的安全性.展开更多
We propose a scheme for realizing a controlled teleportation of random M-qudit quantum information under the control of N agents. The resource consumption includes a prearranged （2M ＋ N ＋ 1）-qudit entangled quantu...We propose a scheme for realizing a controlled teleportation of random M-qudit quantum information under the control of N agents. The resource consumption includes a prearranged （2M ＋ N ＋ 1）-qudit entangled quantum channel and （2M ＋ N ＋1） log2 d-bit classical communication. And the quantum operations used in the teleportation process are a series of generalized Bell-state measurements, single-qudit measurements, qudit H-gates, qudit-Pauli gates and qudit phase gates. It is shown that the original state can be restored by the receiver only on condition that all the agents work in collaboration with each others. If one agent does not cooperate with the other, the original state cannot be fully recovered.展开更多
We propose a controlled scheme for teleportation of an arbitrary one or two atomic state via a driven QEDcavity.The scheme does not involve the joint Bell-state-measurement BSM and the probability of successful telepo...We propose a controlled scheme for teleportation of an arbitrary one or two atomic state via a driven QEDcavity.The scheme does not involve the joint Bell-state-measurement BSM and the probability of successful teleportationis 1.We show that the original atomic state cannot be perfectly restored by the receiver without all the agents collaborateand classical communication.展开更多
基金Supported by the National Natural Science Foundation of China (Grant No. 10671054)the Key Project of Science and Technology Research of Ministry of Education of China (Grant No. 207011)the Natural Science Foundation of Hebei Province, China (Grant No. 07M006)
文摘The probability of successful controlled teleportation of an unknown qubit using a general three-particle state is investigated. The analytic expressions of maximal probabilities via several kinds of tripartite states are given, including a tripartite Greenberger-Horne-Zeilinger state and a tripartite W-state.
基金Supported by the National Natural Science Foundation of China(60807014)the Natural Science Foundation of Jiangxi Province,China(2009GZW0005)+1 种基金the Research Foundation of State Key Laboratory of Advanced Optical Communication Systems and Networksthe Research Foundation of the Education Department of Jiangxi Province,China(GJJ09153)
基金supported by National Natural Science Foundation of China(10704001,61073048)the Key Project of Chinese Ministry of Education(210092)the Key Program of the Education Department of Anhui Province (KJ2009B179Z,2009SQRZ196,KJ2008A28ZC,KJ2009A048Z,2010SQRL153ZD,and KJ2010A287)
文摘We discuss a scheme for probabilistic and controlled teleportation of an unknown arbitrary three-particle state by constructing a peculiar non-maximally entangled state as a controlled quantum channel, which is teleported between two sides with the help of the auxiliary particle and the cooperation of the third side （Charlie） as a supervisor. In comparison with some existing schemes, on the receiver＇s side it is easy to have the sender＇s state through operating two uniform unitary transformations in turn. In addition, we also give an efficient quantum network for implementing the new scheme by means of some primitive operations.
基金Project supported by the Natural Science Foundation of Education Bureau of Jiangsu Province of China （Grant No 05 KJD 140035）.
文摘In this paper a scheme for controlled teleportation of arbitrary high-dimensional unknown quantum states is proposed by using the generalized Bell-basis measurement and the generalized Hadamard transformation. As two special cases, two schemes of controlled teleportation of an unknown single-qutrit state and an unknown two-qutrit state are investigated in detail. In the first scheme, a maximally entangled three-qutrit state is used as the quantum channel, while in the second scheme, an entangled two-qutrit state and an entangled three-qutrit state are employed as the quantum channels. In these schemes, an unknown qutrit state can be teleported to either one of two receivers, but only one of them can reconstruct the qutrit state with the help of the other. Based on the case of qutrits, a scheme of controlled teleportation of an unknown qudit state is presented.
文摘本文提出了基于单控制方的可控量子网络编码方案,实现对传统量子网络编码方案中接收方的解码控制.该方案以经典XQQ(Crossing Two Qubits)协议为基础,引入可控隐形传态的控制方到网络编码模型当中,对两个接收方的解码实现控制.方案分析表明,这种新型方案实现了在没有控制方允许的情况下,即使攻击者获得了接收方全部信息也无法解码获得传输的量子信息,从而提高了量子网络中信息传输的安全性.
基金Project supported by the Scientific Research Fund of Hunan Provincial Education Bureau （Grant No 05B041）, the Foundation for Key Program of Ministry of Education, China （Grant No 206103）, the Science Foundation for Post Doctorate Research from the Ministry of Science and Technology of China （Grant No 2005037695）, and the Natural Science Foundation of Hunan Province . （Grant Nos 04JJ3017 and 05JJ30012）.
文摘We propose a scheme for realizing a controlled teleportation of random M-qudit quantum information under the control of N agents. The resource consumption includes a prearranged （2M ＋ N ＋ 1）-qudit entangled quantum channel and （2M ＋ N ＋1） log2 d-bit classical communication. And the quantum operations used in the teleportation process are a series of generalized Bell-state measurements, single-qudit measurements, qudit H-gates, qudit-Pauli gates and qudit phase gates. It is shown that the original state can be restored by the receiver only on condition that all the agents work in collaboration with each others. If one agent does not cooperate with the other, the original state cannot be fully recovered.
基金The project supported by National Natural Science Foundation of China under Grant Nos.60472017 and 10575017
文摘We propose a controlled scheme for teleportation of an arbitrary one or two atomic state via a driven QEDcavity.The scheme does not involve the joint Bell-state-measurement BSM and the probability of successful teleportationis 1.We show that the original atomic state cannot be perfectly restored by the receiver without all the agents collaborateand classical communication.
基金The National Natural Science Foundation of China(No.11047102)the Natural Science Foundation of Guangxi(No.2011GxNSFB018062)+1 种基金the Educational Commission of Guangxi(No.201012MS078)the Key Project of Chinese Ministry of Education(No.211137)
