Maybe easier to use neutrinos? It has, technically, already been done at short range: https://physicsworld.com/a/neutrino-based-communication-is-a-first/ https

Maybe easier to use neutrinos? It has, technically, already been done at short range: https://physicsworld.com/a/neutrino-based-communication-is-a-first/ https://physicsworld.com/a/neutrino-based-communication-is-a...