“…Hence, the four-qubit, six-qubit, and eight-qubit channel states are the minimum number of qubits required to do a one-way, bidirectional, and cyclic teleportation with two controllers, respectively [1,8]. As a comparison, Ahmadkhaniha et al [53] proposed an alternative teleportation method, i.e., an enable-based bidirectional quantum teleportation protocol, leveraging distributed quantum gates with minimal resource requirements. They showed that by using their proposed method, the entangled state required as the quantum channel can be reduced to a more efficient number.…”