  In this paper, we demonstrate n-party controlled unitary gate implementations
locally on arbitrary remote state through linear entangled channel where
control parties share entanglement with the adjacent control parties and only
one of them shares entanglement with the target party. In such a network, we
describe the protocol of simultaneous implementation of controlled-Hermitian
gate starting from three party scenario. We also explicate the implementation
of three party controlled-Unitary gate, a generalized form of Toffoli gate and
subsequently generalize the protocol for n-party using minimal cost.
