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    Researchers Demonstrate Three-Photon Split in the Microwave Domain

    Article obtained from Photonics RSS Feed.

    Researchers at the University of Waterloo have directly split one photon into three. To do so, they created a non-Gaussian state of light using spontaneous parametric down-conversion (SPDC).

    Traditional SPDC, which splits a high-energy pump photon into two lower-energy photons, is a common way to produce entangled photon pairs. However, directly generating photon triplets through a single SPDC process has remained elusive.

    The researchers used microwave photons to stretch the known limits of SPDC. Using a flux-pumped superconducting parametric cavity, they demonstrated direct three-photon SPDC, with photon triplets generated in a single cavity mode or split between multiple modes. The triplet source was bright, producing a…

    Feb, 28 2020 |

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