Chinese Journal of Quantum Electronics ›› 2020, Vol. 37 ›› Issue (2): 179-187.

• Quantum Optics • Previous Articles     Next Articles

Asymmetric bidirectional?remote state preparation via Cluster state and Bell state

LIAO Yanna, FENG Yusen*, PENG Xinchun   

  1. School of Science, Xi’an University of Posts and Telecommunications, Xi’an 710121, China
  • Received:2019-09-09 Revised:2019-11-26 Published:2020-03-28 Online:2020-03-28

Abstract: A theoretical scheme for asymmetric bidirectional remote preparation is proposed using a special quantum channel with one cluster state and three bell states entangled together. In this scheme, Alice and Bob are both senders and receivers of remote quantum information. Alice helps Bob to prepare a three-qubit entangled state remotely. Meanwhile, Bob also helps Alice to prepare a four-qubit cluster state remotely. Alice and Bob use the orthogonal measurement basis matched with the quantum channel to measure the projection of the qubits (1,3,5) and (8,b). After receiving the measurement result of the other party, the receiver carries out unitary transformation operation corresponding to the measurement basis for each measurement result, and the probability of direct and successful preparation is 1/8. Then, the method to improve the probability of successful preparation is given, in which a specific coefficient is selected firstly, then repeat the above operation to complete the asymmetric bidirectional remote preparation of any three-qubit entangled state and four-qubit cluster state. After calculation and verification, the probability of successful preparation is up to 100%, and the information transmission efficiency of the system is 36.84%.

Key words: quantum optics, asymmetric bidirectional remote state preparation, orthogonal projection measurement, four-qubit cluster state, any three-qubit entangled state

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