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Practical limitations in optical entanglement purification

Peter P. Rohde·Timothy C. Ralph·William J. Munro
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Abstract

Entanglement purification protocols play an important role in the distribution of entangled systems, which is necessary for various quantum information processing applications. We consider the effects of photo-detector efficiency and bandwidth, channel loss and mode-mismatch on the operation of an optical entanglement purification protocol. We derive necessary detector and mode-matching requirements to facilitate practical operation of such a scheme, without having to resort to destructive coincidence type demonstrations.

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Peter P. Rohde, Timothy C. Ralph, William J. Munro. 2005-11-30. Practical limitations in optical entanglement purification. https://doi.org/10.1103/physreva.73.030301

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