摘要
Under the preconditions that a (n:n)-qutrit pure state is taken as the quantum channel to teleport an arbitrary n-qutrit state and the sender is able to perform generalized-Bell-state measurements and publish the results, the necessary transformation operation in the receiver's site is worked out in terms of the technique of swapping states. A criterion on whether such quantum channel can be utilized for perfect teleportation is derived by virtue of the unitarity of the resultant transformation operator. Moreover, the flexibility between the measurement difficulty and the reconstruction difficulty is shown and discussed.
Under the preconditions that a （n：n）-qutrit pure state is taken as the quantum channel to teleport an arbitrary n-qutrit state and the sender is able to perform generalized-Bell-state measurements and publish the results, the necessary transformation operation in the receiver’s site is worked out in terms of the technique of swapping states. A criterion on whether such quantum channel can be utilized for perfect teleportation is derived by virtue of the unitarity of the resultant transformation operator. Moreover, the flexibility between the measurement difficulty and the reconstruction difficulty is shown and discussed.
基金
supported by the Specialized Research Fund for theDoctoral Program of Higher Education (Grant No. 20103401110007)
the National Natural Science Foundation of China (Grant Nos. 10975001,10747146, 10874122 and 11074001)
the Talent Foundation of High Education of Anhui Province for Outstanding Youth (Grant No. 2009SQRZ018)
the 211 Project of Anhui University
关键词
隐形传送
活性
操作
标准
状态
量子通道
技术合作
隐形传输
quantum teleportation
criterion
transformation operator
generalized Bell-state measurement
