Controlled Remote Preparation of an Arbitrary Two-Qubit State via the Brown State Under the Noisy Environment

Abstract

Taking the controlled remote preparation of an arbitrary two-qubit state via the Brown state as an example, we investigate how the scheme is influenced by five-type noises, i.e., the bit flip, phase flip, bit-phase flip, amplitude-damping and phase-damping noise. The fidelity is adopted to describe how close the output state with the prepared state are. It can be seen that the fidelity is related to the coefficients of the prepared state and the noise parameter under five-type noises. Interestingly, the fidelity is connected with the participators’ measurement results under the amplitude-damping noise, but it is not true under other noises.