Generation of multi-photon entanglement by propagation and detection

Details Generation of multi-photon entanglement by propagation and detection Generation of multi-photon entanglement by propagation and detection

2009-03-02

arxiv.org/abs/0903.0389v1

Physics

Quantum Physics

9 pages, 8 figues

Scientific paper

We investigate the change of entanglement of photons due to propagation. We find that post-selected entanglement in general varies by propagation and, as a consequence, states with maximum bi- and tri-partite entanglement can be generated from propagation of unentangled photons. We generalize the results to n photons and show that entangled states with permutation symmetry can be generated from propagation of unentangled states. Generation of n-photon GHZ states is discussed as an example of a class of states with the desired symmetry.

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