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It is known that maximally entangled Bell state and three-qubit W-type statesare very useful in various quantum information processing task. Thus theproblem of preparation of these type of states is very important in quantuminformation theory. But the factor which prohibit the generation of the abovementioned pure states shared between two and three distant partners isdecoherence. When we send one qubit, from a two qubit state, throughdecoherence channel like amplitude damping channel, the purity of the qubit islost and it ends up with a mixed state. Therefore it is very difficult to keepthe pure maximally entangled state in a maximally entangled pure state or in anentangled state with high entanglement. In this work we have provided a methodby which one can generate experimentally a maximally entangled Bell statesshared between distant parties with a non-zero probability when a qubit, from atwo qubit general state, passes through decoherence channel. Therefore, despiteof the fact that qubit is interacting with the noisy channel, we are able togenerate Bell state shared between two distant partners. Further, we have shownthat it is possible to generate pure three-qubit W-type states shared betweenthree distant partners using economical quantum cloning machine andweak-measurement based feed-forward control scheme, even though the second andthird qubit is interacting with the noisy channel. Lastly, we have shown thatthe generated three-qubit W-type states can be used in teleporting one of thetwo non-orthogonal states.

Feed-forward control scheme generate Bell states and three-qubit W-type states when qubits passes through decoherence channel