Symmetric and Asymmetric Cyclic Quantum Teleportation with Different Controller for Each Participant

We successfully realized symmetric and asymmetric cyclic quantum teleportation by using different controllers for each receiver. In this study, Alice sends her qubit to Bob, Bob sends his qubit to Charlie, and Charlie sends his qubit to Alice. We used only Hadamard and CNOT gates to generate all quantum channels. None of the participants could rebuild their original state without permission from each controller. In this work, all controllers must measure their single qubits jointly, while there is no different control level for each participant. Our protocol provides a simple and straightforward method to realize cyclic quantum teleportation under controller supervision. Although the addition of a controller increases the consumption of quantum channel qubits, the intrinsic efficiency can increase with the addition of the initial qubit state.