| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 976217 | Physica A: Statistical Mechanics and its Applications | 2012 | 5 Pages |
Abstract
⺠We investigate the dynamics of quantum discord during the purification process. ⺠In the case of Werner states, it is shown that quantum discord is increased after a round of purification protocol. ⺠We call this process quantum correlation purification in analogy with entanglement purification. ⺠Furthermore, quantum mutual information and classical correlation is also increased during this process. ⺠We also give an analytic expression for a class of higher dimensional states which have additive quantum discord.
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Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Wei Song, Lin Chen, Ming Yang, Zhuo-Liang Cao,