Optimizing scheme for probabilistic remote preparation of a two-qubit state

Hou, Kui, Wang +3 more

Congyi Hua, Yi-Xin Chen

Jin-Fang Li, Jin‐Ming Liu, Xinye Xu

Liu Jin-Ming, Wang Yu-Zhu

In this paper we consider a scheme for probabilistic remote state preparation of a general qubit by using W states. The scheme consists of the sender, Alice and two remote receivers Bob and Carol. Alice performs a projective measurement on her qubit in the basis spanned by the state she wants to prepare and its orthocomplement. This allows either Bob or Carol to reconstruct the state with finite success probability. It is shown that for some special ensembles of qubits, the remote state preparation scheme requires only two classical bits, unlike the case in the scheme of quantum teleportation where three classical bits are needed.

Zhang-Yin Wang, Xing-Qiang Yang

I present a novel tripartite scheme for remotely preparing an arbitrary two-qubit state with two three-qubit entanglements. By using a proper positive operator-valued measure (POVM), it is shown the remote two-qubit preparation can be realized in either distant ministrant's place in a probabilistic manner via their collaboration. I also explore its applications to six special ensembles of state in detail. The extensive investigations shows that the remote preparation can be achieved with higher probability provided that the prepared state belongs to the six special ensembles.

Jin-Fang Li, Jin‐Ming Liu, Xun‐Li Feng +1 more