Asymmetric Controlled Quantum Teleportation Via Eight-Qubit Entangled State in a Noisy Environment

Using eight qubit entangled state, we present a unique protocol for controlled quantum teleportation of one and two-qubit state. This protocol has five parties, one sender Alice who wants to teleport her two-qubit state to receiver Bob, and one qubit state to two distant receivers Charlie and David under the supervision of Eve. The entangled state of eight qubits acts as a channel to connect sender and receivers. In this protocol, we have reported a controlled teleportation protocol in which a single user can teleport different information to three receivers under the controller. This protocol is based on Bell state measurement (BSM), GHZ state measurement (GHZ), single-qubit measurement (SM), and unitary operations (UO). Further, the protocol is proposed in four different noisy channels including the phase-flip noise (PF), bit-flip noise (BF), amplitude-damping noise (ADN), and phase-damping noise (PDN) and it is found that it only depends on the amplitude coefficient of an initial state and noise intensity.