First continuous-variable integrated photonic on-chip quantum multipartite entanglement achieved with optical microcomb

https://phys.org/news/2025-02-chip-multipartite-entanglement-optical-microcomb.html

"scalable... optical microcomb: polychromatic pump/ polychromatic homodyne detection produce multimode squeezed-vacuum optical frequency combs below parametric oscillation threshold, demonstrating the chip-scale deterministic generation... multipartite entanglement reconfiguration: tailoring local oscillator beams to generate various cluster-type 4-qumode linear-, box- and star-, 6-qumode linear-type, and continuous-variable cluster-style-type entanglement structure... quantum: computation, networking, metrology, sensing"