Controlled teleportation of high-dimension quantumstates with generalized Bell-state measurement

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.

三能级单量子态控制双向量子隐形传态(英文)

采用张量表示和广义三维贝尔基测量的方法,提出了实现三能级单量子态控制双向量子隐形传态的协议.协议中,控制者Carol的量子态为任意广义三维贝尔基.选择六粒子纠缠态作为量子通道,并给出了判断任意六粒子纠缠态能否作为量子通道的必要条件.基于该条件,借助SO(3)群元素的幺正性,选择其任意两个元素作为幺正矩阵,给出了构建量子通道的一般方法.列举了两个具体构建量子通道的例子,其中Alice、Bob、Carol共同作用,进行相应的广义三维贝尔基测量和对应的幺正变换,最终实现了Alice和Bob之间量子态的交换,从而验证了所提协议的可行性.

Controlled Probabilistic Teleportation of an Unknown Multi-Particle High-Dimensional Entangled State

我们建议为与二部分分成三部分的 qutrit 州的纠缠的未知分成三部分的 qutrit 的控制概率的远距传物的一个协议作为量隧道纠缠了状态。在三维的 Hilbert 空格与概括 qutrit 钟基础测量，概括 qutrit π-state 测量和概括 Hadamard 操作符联系了，被发现那远距传物。我们概括协议因为未知 k 粒子 qudit 的控制概率的远距传物纠缠了状态，州的多粒子 qudit 纠缠了，分成三部分的 qudit 作为量隧道纠缠了状态。我们也计算在两个盒子中要求的古典通讯费用。