Stimulated Hawking effect and quasinormal mode resonance in a polariton simulator of field theory on curved spacetime

TL;DR

This paper investigates the stimulated Hawking effect in a polariton simulator, demonstrating how a probe interacts with an analogue horizon and revealing spectral signatures linked to quasinormal modes, guiding future experiments.

Contribution

It introduces a realistic polariton-based model to study stimulated Hawking radiation and its resonance with quasinormal modes in a controlled laboratory setting.

Findings

Stimulated Hawking effect observed as transmission into negative-energy channels.

Transmission peaks at quasinormal mode frequencies.

Spectral signatures provide experimental guidance for observing Hawking phenomena.

Abstract

The Hawking effect amplifies fluctuations in the vicinity of horizons, both in black holes and in analogue platforms. Here, we consider a polariton simulator and numerically examine the \emph{stimulated} Hawking effect using a coherent probe incident on the horizon from the exterior. We implement an experimentally realistic effective spacetime that supports a quasinormal mode (QNM) in the vicinity of the horizon. We find that the stimulated Hawking effect manifests as transmission into a negative-energy Bogoliubov channel inside the horizon, consistent with pseudo-unitary Bogoliubov scattering. Moreover, transmission across the horizon peaks at the QNM frequency. The computed spectral signatures provide a practical guide for future experimental investigations of the Hawking effect and its interplay with QNMs, an open question in quantum field theory in curved spacetime.