Tripartition of Arbitrary Single-Qubit Information via a Class of Asymmetric Four-Qubit W State

作     者：YIN Xiao-Feng LIU Yi-Min SHI Shi-Wei ZHANG Wen ZHANG Zhan-Jun 

作者机构：School of Physics ＆ Material Science Anhui University Hefei 230039 China Department of Physics Shaoguan University Shaoguan 512005 China Key Laboratory of Optoelectronic Information Acquisition ＆ Manipulation of Ministry of Education School of Physics Material Science Anhui University Hefei 230039 China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2009年第52卷第10期

页      面：606-610页

核心收录：

学科分类：07[理学] 08[工学] 070201[理学-理论物理] 0704[理学-天文学] 081201[工学-计算机系统结构] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Supported by the Program for New Century Excellent Talents at the University of China under Grant No.NCET-06-0554 the National Natural Science Foundation of China under Grant Nos.10975001,60677001,10747146,and 10874122 the Science-Technology Fund of Anhui Province for Outstanding Youth under Grant No.06042087 the Key Fund of the Ministry of Education of China under Grant No.206063 the General Fund of the Educational Committee of Anhui Province under Grant No.2006KJ260B the Natural Science Foundation of Guangdong Province under Grant Nos.06300345 and 7007806 

主　　题：four-party scheme tripartition arbitrary single-qubit quantum information asymmetric fourqubit W state 

摘      要：A four-party scheme is put forward for a sender to partition arbitrary single-qubit information among three receivers by utilizing a class of asymmetric four-qubit W state as quantum channels. In the scheme the sender＇s quantum information can be recovered by the three receivers if and only if they collaborate together. Specifically, they collaborate to perform first two different 2-qubit collective unitary operations and then a single-qubit unitary operation. The scheme is symmetric and （3, 3）-threshold with regard to the reconstruction, for any receiver can be assigned to conclusively recover the quantum information with the other two＇s assistances.