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Improved two-party and multi-party purification protocols

Elitza N. Maneva·John A. Smolin
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Abstract

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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Elitza N. Maneva, John A. Smolin. 2000-03-21. Improved two-party and multi-party purification protocols. https://arxiv.org/abs/quant-ph/0003099

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