摘要
In this note,we give a new lower bound for the concurrence,which is related to D-concurrence.For the Werner states,we compare that this D-concurrence bound with the other known bound.In addition,some of new upper and lower bounds of D-concurrence are given.
In this note,we give a new lower bound for the concurrence,which is related to D-concurrence.For the Werner states,we compare that this D-concurrence bound with the other known bound.In addition,some of new upper and lower bounds of D-concurrence are given.
基金
Supported by National Natural Science Foundation of under Grant Nos. 11001159,11171197
supported by the Fundamental Research Funds for the Central Universities GK200902049,GK201002012,and GK201001002
关键词
性质
下界
上界
C-concurrence
D-concurrence
Werner state
