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.
@article{arxiv.quant-ph/0511268,
title = {Practical limitations in optical entanglement purification},
author = {Peter P. Rohde and Timothy C. Ralph and William J. Munro},
journal= {arXiv preprint arXiv:quant-ph/0511268},
year = {2007}
}