迹范数和Frobenius范数下的量子态可分判据

摘要

Based on the trace norm and Frobeniusnorm,we analyze separable expressions of a kind of 2 × 2 quantum state under the || Гρ || criterion and the matrix realignment criterion.Then we compare the strong and weak relationship between the || Гρ || criterion and the matrix realignment criterion.We also analyze the influence of Frobenius norm and the trace norm on the two criteria.%本文分别在迹范数和Frobenius范数下,分析了利用|| Гρ ||判据和矩阵重排判据判断一类2×2系统量子态可分性时的条件表示.并在此基础上,比较了||Гρ||判据和矩阵重排判据之间的强弱关系,分析了迹范数和Frobenius范数对两个可分判据的影响.