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论文类型：期刊论文

发表时间：2013-04-01

发表刊物：INTERNATIONAL JOURNAL OF QUANTUM INFORMATION

收录刊物：SCIE

卷号：11

期号：3

ISSN号：0219-7499

关键字：Quantum correlations; distillation

摘要：We study the quantum correlations between source and target pairs in different protocols of entanglement distillation of one kind of entangled states. We find that there does not exist any quantum correlation in the standard recurrence distillation protocol, while quantum discord and even quantum entanglement are always present in the other two cases of the improved distillation protocols. In the three cases, the distillation efficiency improved with the quantum correlations enhanced.