Black Holes as Quantum Information Capacitors: A SETI Pathway to Hidden-Particle Civilizations
To the point
Gia Dvali and Zaza N. Osmanov propose that advanced civilizations could use black holes as ultra-efficient quantum memory for their computers, Hawking radiation would emit ordinary particles such as photons and neutrinos that we could detect, and this would open a new SETI pathway—even allowing civilizations built from hidden particles that interact with our world only through gravity.