Subadditivity of the minimum output entropy and superactivation of the classical capacity of quantum multiple access channels
Subadditivity of the minimum output entropy and superactivation of the classical capacity of quantum multiple access channels
复制标题
量子多址信道最小输出熵的次可加性与经典容量的超激活
DOI:
--
复制
发表时间:
2010
期刊:
影响因子:
--
通讯作者:
L. Czekaj
中科院分区:
文献类型:
--
作者:
L. Czekaj
We study subadditivity of the minimum output entropy (H{sub min}) of quantum multiple access channels (MACs). We provide an example of violation of the additivity theorem for H{sub min} known in classical information theory. Our result is based on a fundamental property of MACs, i.e., independence of each sender. The channels used in the example can be constructed explicitly. On the basis of subadditivity of H{sub min} we also provide an example of extremal superadditivity (superactivation) of the classical capacity region of MACs.
DOI:
10.1142/s1230161210000047
发表时间:
2009-07
期刊:
Open Syst. Inf. Dyn.
影响因子:
--
作者:
F. Brandão;M. Horodecki
通讯作者:
F. Brandão;M. Horodecki