Controlled Remote Preparing of an Arbitrary 2-Qudit State with Two-Particle Entanglements and Positive Operator-Valued Measure  

作　　者：LIAOYue-Ming ZHOU Ping QIN Xing-Chen HE Yan-He QIN Jian-Sheng 

机构地区：[1]School of Science, Guangxi University for Nationalities, Nanning 530006, China [2]Guangxi Key Laboratory of Hybrid Computational and IC Design Analysis, Nanning 530006, China

出　　处：《Communications in Theoretical Physics》2014年第3期315-321,共7页理论物理通讯（英文版）

基　　金：Supported by Program for Natural Science Foundation of Guangxi under Grant No. 2011GxNSFB018062, Excellent Talents in Guangxi Higher Education Institutions under Grant No. [2012]41, Key program of Cuangxi University for Nationalities under Grant No. [2011]317 and the Bagui Scholarship Project

摘　　要：We present a scheme for symmetric controlled remote preparation of an arbitrary 2-qudit state form a sender to either of the two receivers via positive operator-valued measurement and pure entangled two-particle states. The first sender transforms the quantum channel shared by all the agents via POVM according to her knowledge of prepared state. All the senders perform singIe- or two-particle projective measurements on their entangled particles and the receiver can probabilisticaly reconstruct the original state on her entangled particles via unitary transformation and auxiliary qubit. The scheme is optimal as the probability which the receiver prepares the original state equals to the entanglement of the quantum channel. Moreover, it is more convenience in application than others as it requires only two-particle entanglements for preparing an arbitrary two-qudit state.

关 键 词：controlled remote state preparation positive operator-valued measure two-particle entanglements 

分 类 号：O177.5[理学—数学] TM350.3[理学—基础数学]