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Paper detail

Quantifying Tripartite Spatial and Energy-Time Entanglement in Nonlinear Optics

In this work, we provide a means to quantify genuine tripartite entanglement in arbitrary (pure and mixed) continuous-variable states as measured by the Tripartite Entanglement of formation -- a resource-based measure quantifying genuine multi-partite entanglement in units of elementary Greenberger-Horne-Zeilinger (GHZ) states called gebits. Furthermore, we predict its effectiveness in quantifying the tripartite spatial and energy-time entanglement in photon triplets generated in cascaded spontaneous parametric down-conversion (SPDC), and find that ordinary nonlinear optics can be a substantial resource of tripartite entanglement.

preprint2022arXivOpen access
James SchneelochRichard J. BirrittellaChristopher C. TisonGregory A. HowlandMichael L. FantoPaul M. Alsing
physics.opticsquant-ph
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James SchneelochRichard J. BirrittellaChristopher C. TisonGregory A. HowlandMichael L. FantoPaul M. Alsing

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