09 9 v 1 2 1 M ar 2 00 0 Improved two-party and multi-party purification protocols

@inproceedings{Maneva2000099V,
  title={09 9 v 1 2 1 M ar 2 00 0 Improved two-party and multi-party purification protocols},
  author={Elitza N. Maneva and John A. Smolin},
  year={2000}
}
We present an improved protocol for entanglement purification of bipartite mixed states using several states at a time rather than two at a time as in the traditional recurrence method. We also present a generalization of the hashing method to n-partite cat states, which achieves a finite yield of pure cat states for any desired fidelity. Our results are compared to previous protocols. 
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