山东大学学报（理学版） ›› 2016, Vol. 51 ›› Issue (11): 127-134.doi: 10.6040/j.issn.1671-9352.0.2015.218
• • 上一篇
王晓霞,曹怀信*,查嫽
WANG Xiao-xia, CAO Huai-xin*, ZHA Liao
摘要： 根据量子态之集是一个凸闭集, 证明了广义纠缠鲁棒性定义中的下确界是可以取到的,说明了同一量子态的两个广义最优态的凸组合仍是广义最优态,广义纠缠鲁棒性作为定义态集合上函数是下半连续的。其次,分别给出了一个量子信道不增加(不减少、保持)所有量子态的广义纠缠鲁棒性的充分必要条件。最后, 作为应用得到了相关已有结果。
中图分类号:
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