This paper takes advantage of the quantum mechanics to present two efficient circular controlled quantum communication schemes. The proposed protocols utilize ten qubits for transmitting the information qubits to five partners circularly, under the permission of a controller. The first protocol is a circular controlled quantum teleportation, which teleports unknown quantum states. The second protocol is a circular controlled quantum broadcast scheme which sends quantum states to two dispersed recipients, circularly. In this paper, the effects of quantum noises on these protocols are analyzed, and the fidelity of the quantum states is calculated too. We will see that, in the circular controlled quantum teleportation protocol, the impact of the noise on input qubits is less than its impact on channel qubits.

本文利用量子力学提出了两种有效的循环控制量子通信方案。在控制器的允许下，所提出的协议利用十个量子位将信息量子位循环传输到五个伙伴。第一个协议是循环控制的量子隐形传态，它隐形传送未知的量子态。第二种协议是一种循环控制的量子广播方案，该方案将量子状态循环发送到两个分散的接收者。本文分析了量子噪声对这些协议的影响，并计算了量子态的保真度。我们将看到，在循环控制的量子隐形传态协议中，噪声对输入量子位的影响小于其对通道量子位的影响。