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Emission of OAM entangled photon pairs in a nonlinear ring fiber utilizing spontaneous parametric down-conversion

We suggest the generation of photon pairs in a thermally induced nonlinear periodically-poled silica fiber by spontaneous parametric down-conversion. Photons are generated directly in eigenstates of optical angular momentum. Photons in a pair can be entangled in these states as well as in frequencies. We identify suitable spatial and polarization modes giving an efficient nonlinear interaction. By changing the pump field properties both narrow- and broad-band down-converted fields can be obtained.

preprint2014arXivOpen access
D. JavůrekJ. SvozilíkJ. Peřina Jr
physics.opticsquant-ph
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Open access3 authors2 topics
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D. JavůrekJ. SvozilíkJ. Peřina Jr

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