Symmetric Cyclic Controlled Quantum Teleportation of Three-Qubit State by a nineteen-Qubit Entangled State

Current protocols face limitations due to the small number and single form of transmitted qubits, as well as the complexity involved in preparing quantum channels. To address these limitations and develop a novel and practical protocol, we propose a new symmetric cyclic controlled quantum teleportation protocol, using nineteen-qubit entangled state as the quantum channel. Specifically, Alice, Bob and Charlie cyclically send arbitrary three-qubit states among themselves with the help of the controller David. The specialty of the proposed protocol is the utilization of multiple easy-to-prepare Bell-states and single-qubits within the quantum channel, which effectively minimizes resource consumption. Furthermore, we generalize the protocol with n+1(n≥3) parties by using (6n+1)-qubit entangled state as the quantum channel. This paper briefly analyzes the security of the protocol and compares them with the previous protocols in terms of efficiency. The results show that the present protocol is secure and more efficient. Our scheme has the potential to play a crucial role in facilitating secure quantum communication between quantum nodes in quantum networks.