Deterministic assisted clone of an unknown four-particle entangled cluster-type state  

作　　者：马松雅 罗明星 孙莹 

机构地区：[1]School of Mathematics and Information Sciences, Henan University [2]School of Information Science and Technology, Southwest Jiaotong University [3]Beijing Electronic Science and Technology Institute

出　　处：《Chinese Physics B》2013年第11期183-189,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.61201253,61303039,11226336,61103210,and 61272514);the Nat-ural Science Foundation of Henan Provincial Education Department,China(Grant No.12A120003);the Fundamental Research Funds for the Central Universities,China(Grant No.SWJTU11BR174)

摘　　要：Two deterministic schemes are proposed to realize the assisted clone of an unknown four-particle entangled cluster- type state. The schemes include two stages. The first stage requires teleportation via maximal entanglement as the quantum channel. In the second stages of the protocols, two novel sets of mutually orthogonal basis vectors are constructed, With the assistance of the preparer through a four-particle or two-step two-particle projective measurement under these bases, the perfect copy of an original state can be produced. Comparing with the previous protocols which produce the unknown state and its orthogonal complement state at the site of the sender, the proposed schemes generate the unknown state deterministically.Two deterministic schemes are proposed to realize the assisted clone of an unknown four-particle entangled cluster- type state. The schemes include two stages. The first stage requires teleportation via maximal entanglement as the quantum channel. In the second stages of the protocols, two novel sets of mutually orthogonal basis vectors are constructed, With the assistance of the preparer through a four-particle or two-step two-particle projective measurement under these bases, the perfect copy of an original state can be produced. Comparing with the previous protocols which produce the unknown state and its orthogonal complement state at the site of the sender, the proposed schemes generate the unknown state deterministically.

关 键 词：deterministic assisted clone complete orthogonal basis TELEPORTATION remote preparation 

分 类 号：O431.2[机械工程—光学工程]