A generalized tripartite scheme for splitting an arbitrary 2-qubit state with three 2-qubit partially entangled states and the Kraus measurement  

作　　者：XU ChunJie LIU YiMin ZHANG Wen ZHANG ZhanJun 

机构地区：[1]School of Physics & Materials Science, Anhui University. Hefei 230039, China [2]Department of Physics, Shaoguan University, Shaoguan 512005, China [3]School of Physics & Materials Science, Anhui University, Hefei 230039, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2011年第2期281-287,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the program for New Century Excellent Talents at the University of China (Grant No NCET-06-0554);the National Natural Science Foundation of China (Grant Nos.10975001, 60677001, 10747146 and 10874122);the Science and Technology Fund of Anhui Province for Outstanding Youth (Grant No 06042087);the Key Fund of the Ministry of Education of China (Grant No 206063);the Talent Foundation of Higher Education of Anhui Province for Outstanding Youth (Grant No.2009SQRZ018)

摘　　要：We put forward a generalized tripartite scheme for splitting an arbitrary 2-qubit pure state with three 2-qubit non-maximally en-tangled states as quantum channels.The scheme for the first time incorporates the Kraus measurement into quantum information splitting scheme.In contrast to the similar scheme using the same quantum channels and the ancilla-entangled measurement,our scheme is superior in terms of operation and complexity,success probability,resource consumption and effciency.We put forward a generalized tripartite scheme for splitting an arbitrary 2-qubit pure state with three 2-qubit non-maximally en-tangled states as quantum channels.The scheme for the first time incorporates the Kraus measurement into quantum information splitting scheme.In contrast to the similar scheme using the same quantum channels and the ancilla-entangled measurement,our scheme is superior in terms of operation and complexity,success probability,resource consumption and effciency.

关 键 词：quantum state splitting non-maximally entangled state Kraus operator 

分 类 号：O413.1[理学—理论物理] TP38[理学—物理]