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József Zsolt Bernád on Muck Rack

József Zsolt Bernád

As seen in: Physical Review B
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Articles

Statistical evaluation and optimization of entanglement purification protocols

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By Francesco Preti, Forschungszentrum Jülich, József Zsolt Bernád
| Physical Review B
Quantitative characterization of two-qubit entanglement purification protocols is introduced. Our approach is based on the concurrence and the hit-and-run algorithm applied to the convex set of all two-qubit states. We demonstrate that pioneering protocols are unable to improve the estimated initial average concurrence of almost uniformly sampled density matrices; however, as it is known, they still generate pairs of qubits in a state that is close to a Bell state.
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