Song, Wei; Chen, Lin; Yang, Ming; Cao, Zhuo-Liang - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 16, pp. 4186-4190
We investigate the dynamics of quantum discord during the purification process. In the case of Werner states, it is shown that quantum discord is increased after a round of purification protocol. Furthermore, quantum mutual information and classical correlation is also increased during this...