Researchers demonstrate multi-photon state transfer between remote superconducting nodes

https://phys.org/news/2024-02-multi-photon-state-remote-superconducting.html

"remote superconducting nodes, efficient bidirectional multiphoton communication of complex quantum states in superconducting circuits between qubit nodes connected to one another with single physical transmission line... loaded quantum state into resonator (nominally infinite number of quantum levels), then send entire resonator state into transmission line, catching it with remote resonator... increases available bandwidth... N00N state entanglement between 2 resonators... quantum communication"

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https://phys.org/news/2024-02-combining-materials-unique-superconductivity-quantum.html