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In this work, we propose the quantum Hall system as a platform for exploringblack hole phenomena. By exhibiting deep rooted commonalities between lowestLandau level and spacetime symmetries, we show that features of both quantumHall and gravitational systems can be elegantly captured by a simple quantummechanical model, the inverted harmonic oscillator. Through thiscorrespondence, we argue that radiation phenomena in gravitational situations,such as presented by W. G. Unruh and S. Hawking, bears a parallel withsaddle-potential scattering of quantum Hall quasiparticles. We also find thatscattering by the quantum Hall saddle potential can mimic the signaturequasinormal modes in black holes, such as theoretically demonstrated throughGaussian scattering off a Schwarzschild black hole by C. V. Vishveshwara. Wepropose a realistic quantum Hall point contact setup for probing thesetemporally decaying modes in quasiparticle tunneling, offering a new mesoscopicparallel for black hole ringdown.

Quasinormal Modes and Hawking-Unruh effect in Quantum Hall Systems: Lessons from Black Hole Phenomena