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.

Black Holes As Tools For Quantum Computing By Advanced Extraterrestrial Civilizations - Astrobiology
astrobiology.com

Black Holes As Tools For Quantum Computing By Advanced Extraterrestrial Civilizations - Astrobiology

We explain that black holes are the most efficient capacitors of quantum information. It is thereby expected that all sufficiently advanced civilizations ultimately employ black holes in their quantum computers.