Superadditivity with Mixed States Ensemble
LIN Qing, LI Jian, GUO Guang-Can
Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026
Superadditivity with Mixed States Ensemble
LIN Qing;LI Jian;GUO Guang-Can
Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026
关键词 ：
03.67.Hk ,
03.65.Ta ,
89.70.+c
Abstract ： Superadditivity is a special property in quantum communication theory. We present the optimal measurement for a mixed-state ensemble and calculate the amount of one-shot capacity, which is connected to the intensity of noise of the channel. Then the property of superadditivity is preserved when the mixed-state ensemble is used to transmit information.
Key words ：
03.67.Hk
03.65.Ta
89.70.+c
出版日期: 2005-05-01
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2005, Vol. 22 
