Practical limitations in optical entanglement purification

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.

4 pages, 4 figures

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Cited by in corpus (4)

• Spectral structure and decompositions of optical states, and their applications
• Efficient recycling strategies for preparing large Fock states from single-photon sources --- Applications to quantum metrology
• Optical quantum computing with photons of arbitrarily low fidelity and purity
• Time-resolved detection and mode-mismatch in a linear optics quantum gate