In this paper, we present a deterministic four-party quantum cyclic controlled teleportation (QCYCT) scheme, by using a multi-qubit partially entangled state as the quantum channel. In this scheme, Alice can teleport an arbitrary [Formula: see text]-qubit state to Bob, Bob can teleport an arbitrary [Formula: see text]-qubit state to Charlie and Charlie can teleport an arbitrary [Formula: see text]-qubit state to Alice under the control of the supervisor David. We utilize rotation gate, Hadamard gates and controlled-NOT (CNOT) gates to construct the multi-qubit partially entangled channel. Only Bell-state measurements, single-qubit von-Neumann measurement and proper unitary operations are required in this scheme, which can be realized in practice easily based on the present quantum experiment technologies. The direction of cyclic controlled teleportation of arbitrary multi-qubit states can also be changed by altering the quantum channel. Analysis demonstrates that the success probability of the proposed scheme can still reach 100% although the quantum channel is non-maximally entangled. Furthermore, the proposed four-party scheme can be generalized into the case involving [Formula: see text] correspondents, which is more suitable for quantum communication networks. We also calculate the intrinsic efficiency and discuss the security of the proposed scheme. Compared with the existing QCYCT schemes which realized cyclic controlled teleportation of arbitrary single-qubit states, specific two-qubit and three-qubit states, the proposed scheme is of general significance.

中文翻译：

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使用多量子位部分纠缠通道的任意多量子位状态的确定性量子循环控制隐形传态

在本文中，我们提出了一种确定性四方量子循环控制隐形传态（QCYCT）方案，使用多量子比特部分纠缠态作为量子通道。在这个方案中，Alice 可以将任意 [公式：见文本]-量子比特状态传送给 Bob，Bob 可以将任意 [公式：见文本]-量子比特状态传送给查理，而查理可以传送任意 [公式：见文本]-在监督者大卫的控制下，爱丽丝的量子比特状态。我们利用旋转门、Hadamard 门和受控非（CNOT）门来构建多量子比特部分纠缠通道。该方案仅需要贝尔态测量、单量子比特冯-诺依曼测量和适当的酉运算，基于目前的量子实验技术，在实践中很容易实现。任意多量子位状态的循环控制隐形传输的方向也可以通过改变量子通道来改变。分析表明，尽管量子信道是非最大纠缠的，但该方案的成功概率仍然可以达到 100%。此外，提出的四方方案可以推广到涉及[公式：见正文]通讯员的情况，更适用于量子通信网络。我们还计算了内在效率并讨论了所提出方案的安全性。与现有QCYCT方案实现任意单量子比特状态、特定二量子比特和三量子比特状态的循环控制隐形传态相比，该方案具有普遍意义。