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Creation of Maximally Entangled Photon Number States using Optical Fibre Multiports

By G. J. Pryde and A. G. White


We theoretically demonstrate a method for producing the maximally path-entangled state (1/Sqrt[2]) (|N,0> + exp[iN phi] |0,N>) using intensity-symmetric multiport beamsplitters, single photon inputs, and either photon-counting postselection or conditional measurement. The use of postselection enables successful implementation with non-unit efficiency detectors. We also demonstrate how to make the same state more conveniently by replacing one of the single photon inputs by a coherent state

Topics: Quantum entanglement, Single photons, Beam-splitting, 240402 Quantum Optics and Lasers
Year: 2003
OAI identifier: oai:espace.library.uq.edu.au:UQ:10921

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