Black-hole powered quantum coherent amplifier

TL;DR

This paper proposes a novel quantum amplifier powered by black hole energy, using atoms falling into a black hole to coherently amplify light, with potential applications in space propulsion and insights into black hole thermodynamics.

Contribution

It introduces a black-hole powered quantum amplifier that harnesses black hole energy for coherent light amplification, linking black hole physics with quantum thermodynamics.

Findings

Demonstrates coherent amplification via atoms falling into a black hole.

Shows the process can function as a black-hole powered quantum heat engine.

Provides a thermodynamic framework for black hole acceleration radiation.

Abstract

Atoms falling into a black hole (BH) through a cavity are shown to enable coherent amplification of light quanta powered by the BH gravitational vacuum energy. This process can harness the BH energy towards useful purposes, such as propelling a spaceship trapped by the BH. The process can occur via transient amplification of a signal field by falling atoms that are partly excited by Hawking radiation reflected by an orbiting mirror. In the steady-state regime of thermally equilibrated atoms that weakly couple to the field, this amplifier constitutes a BH-powered quantum heat engine. The envisaged effects substantiate the thermodynamic approach to BH acceleration radiation.