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arXiv · 1506.01816

Excessive distribution of quantum entanglement

Margherita Zuppardo·Tanjung Krisnanda·Tomasz Paterek·Somshubhro Bandyopadhyay·Anindita Banerjee·Prasenjit Deb·Saronath Halder·Kavan Modi·Mauro Paternostro
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Abstract

We classify protocols of entanglement distribution as excessive and non-excessive ones. In a non-excessive protocol, the gain of entanglement is bounded by the amount of entanglement being communicated between the remote parties, while excessive protocols violate such bound. We first present examples of excessive protocols that achieve a significant entanglement gain. Next we consider their use in noisy scenarios, showing that they improve entanglement achieved in other ways and for some situations excessive distribution is the only possibility of gaining entanglement.

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Margherita Zuppardo, Tanjung Krisnanda, Tomasz Paterek, Somshubhro Bandyopadhyay, Anindita Banerjee, Prasenjit Deb, Saronath Halder, Kavan Modi, Mauro Paternostro. 2015-06-09. Excessive distribution of quantum entanglement. https://doi.org/10.1103/physreva.93.012305

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