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arXiv · 0811.4046

Entanglement purification protocol for a mixture of a pure entangled state and a pure product state

Mikolaj Czechlewski·Andrzej Grudka·Satoshi Ishizaka·Antoni Wojcik
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Abstract

We present an entanglement purification protocol for a mixture of a pure entangled state and a pure product state, which are orthogonal to each other. The protocol is combination of bisection method and one-way hashing protocol. We give recursive formula for the rate of the protocol for different states, i.e. the number of maximally entangled two-qubit pairs obtained with the protocol per a single copy of the initial state. We also calculate numerically the rate for some states.

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Mikolaj Czechlewski, Andrzej Grudka, Satoshi Ishizaka, Antoni Wojcik. 2009-08-05. Entanglement purification protocol for a mixture of a pure entangled state and a pure product state. https://doi.org/10.1103/physreva.80.014303

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