Black holes as tools for quantum computing by advanced extraterrestrial civilizations

TL;DR

The paper proposes that advanced extraterrestrial civilizations might utilize black holes as quantum computers, which could emit detectable Hawking radiation, providing a novel method for SETI to identify such civilizations through their emitted particles.

Contribution

It introduces the idea that black holes serve as optimal quantum information capacitors and suggests their use by alien civilizations, offering a new perspective for SETI detection strategies.

Findings

Black holes are highly efficient quantum information capacitors.

Alien civilizations may use black holes in their quantum computing, emitting detectable Hawking radiation.

Hawking radiation includes ordinary particles like neutrinos and photons detectable by current instruments.

Abstract

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. The accompanying Hawking radiation is democratic in particle species. Due to this, the alien quantum computers will radiate in ordinary particles such as neutrinos and photons within the range of potential sensitivity of our detectors. This offers a new avenue for SETI, including the civilizations entirely composed of hidden particles species interacting with our world exclusively through gravity.