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Entanglement distribution by an arbitrarily inept delivery service

S. J. Jones·H. M. Wiseman·D. T. Pope
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Abstract

We consider the scenario where a company C manufactures in bulk pure entangled pairs of particles, each pair intended for a distinct pair of distant customers. Unfortunately, its delivery service is inept - the probability that any given customer pair receives its intended particles is S, and the customers cannot detect whether an error has occurred. Remarkably, no matter how small S is, it is still possible for C to distribute entanglement by starting with non-maximally entangled pairs. We determine the maximum entanglement distributable for a given S, and also determine the ability of the parties to perform nonlocal tasks with the qubits they receive.

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S. J. Jones, H. M. Wiseman, D. T. Pope. 2006-04-21. Entanglement distribution by an arbitrarily inept delivery service. https://doi.org/10.1103/physreva.72.022330

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