<正> In this paper,we propose a protocol to deterministically teleport an unknown mixed state of qubit byutilizing a maximally bipartite entangled state of qubits as quantum channel.If a non-maximally entangled ...<正> In this paper,we propose a protocol to deterministically teleport an unknown mixed state of qubit byutilizing a maximally bipartite entangled state of qubits as quantum channel.If a non-maximally entangled bipartite purestate is employed as quantum channel,the unknown mixed quantum state of qubit can be teleported with 1-(1-C~2)~(1/2)probability,where C is the concurrence of the quantum channel.The protocol can also be generalized to teleport amixed state of qudit or a multipartite mixed state.More important purpose is that,on the basis of the protocol,theteleportation of an arbitrary multipartite(pure or mixed)quantum state can be decomposed into the teleportation ofeach subsystem by employing separate entangled states as quantum channels.In the case of deterministic teleportation,Bob only needs to perform unitary transformations on his single particles in order to recover the initial teleportedmultipartite quantum state.展开更多
<正> Based on the bipartite entangled state representation and using the technique of integration within anordered product(IWOP)of operators we construct the corresponding operator Fredholm equations and then de...<正> Based on the bipartite entangled state representation and using the technique of integration within anordered product(IWOP)of operators we construct the corresponding operator Fredholm equations and then derive theirsolutions.As its application we deduce some new bosonic operator identities and new relations about the two-variableHermite polynomials.展开更多
基金The project supported by National Natural Science Foundation of China under Grant Nos. 10575017 and 60472017
文摘<正> In this paper,we propose a protocol to deterministically teleport an unknown mixed state of qubit byutilizing a maximally bipartite entangled state of qubits as quantum channel.If a non-maximally entangled bipartite purestate is employed as quantum channel,the unknown mixed quantum state of qubit can be teleported with 1-(1-C~2)~(1/2)probability,where C is the concurrence of the quantum channel.The protocol can also be generalized to teleport amixed state of qudit or a multipartite mixed state.More important purpose is that,on the basis of the protocol,theteleportation of an arbitrary multipartite(pure or mixed)quantum state can be decomposed into the teleportation ofeach subsystem by employing separate entangled states as quantum channels.In the case of deterministic teleportation,Bob only needs to perform unitary transformations on his single particles in order to recover the initial teleportedmultipartite quantum state.
基金The project supported by the Specialized Research Fund for the Doctorial Progress of Higher Education of China under Grant No. 20040358019 and National Natural Science Foundation of China under Grant No. 10475056
文摘<正> Based on the bipartite entangled state representation and using the technique of integration within anordered product(IWOP)of operators we construct the corresponding operator Fredholm equations and then derive theirsolutions.As its application we deduce some new bosonic operator identities and new relations about the two-variableHermite polynomials.
基金The project supported by the Natural Science Foundation of the Education Department of Anhui Province under Grant Nos. 2006kj070A and 2006kj057B, National Natural Science Foundation of China under Grant No. 10574001, and the Talent Foundation of Anhui University
基金The project supported by the Specializcd Research Fund for the Doctoral Program of Higher Education under Grant No. 20050285002 . It is a pleasure to thank Xiang Hao, Jian-Xing Fang and Yin-Sheng Ling for their useful and extensive discussions about the topic.
