QUANTUM CORRELATIONS IN THE ENTANGLEMENT DISTILLATION PROTOCOLS
Shao-xiong Wu, Jun Zhang, Chang‐shui Yu +1 more
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.
International Journal of Quantum Information•Apr 1, 2013•0 citations