Correlated coherence as resource in remote state preparation and quantum teleportation

Abstract

In recent years, the evidence that separable states and classically correlated states can also accomplish quantum information process(QIP) is demonstrated. This evidence provides a useful tool since it is easier to generate coherence than entanglement and discord. Nowadays, it is of interest whether quantum coherence can act as a resource in QIP independently or not, without the help of quantum discord or entanglement. In this paper, we show that quantum correlated coherence induced by basis-independence and $l_2$-norm is another kind of quantum resource. Correlated coherence can accurately quantify the effectiveness of the resource state in the Remote State Preparation(RSP) protocol. Tomographically reconstructed correlated coherent states can accomplish RSP protocol individually. We provide both the theoretical derivation and experimental scheme. In quantum teleportation, a resource state with non-zero correlated coherence is effective while a correlated incoherent state is not.