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QI: Fachverband Quanteninformation

QI 12: Quantum Foundations

QI 12.2: Vortrag

Mittwoch, 11. März 2026, 15:15–15:30, BEY/0137

Today's Experiments Suffice to Verify the Quantum Essence of Gravity — •Martin Plávala — Institut für Theoretische Physik, Leibniz Universität Hannover, 30167 Hannover, Germany

The gravity-mediated entanglement experiments employ concepts from quantum information to argue that if gravitational interaction creates entanglement between two systems, then gravity cannot be described by a classical system. However, the proposed experiments remain beyond out current technological capability, with optimistic projections placing the experiment outside of short-term future. Here we leverage quantum information techniques to argue that current matter-wave interferometers are sufficient to indirectly prove that gravitational interaction creates entanglement between two systems. Specifically, we prove that if we experimentally verify the Schrödinger equation for a single delocalized system interacting gravitationally with an external mass, then the time evolution of two delocalized systems will lead to gravity-mediated entanglement. Our findings indicate that the experimental verification of the quantum essence of gravity is on the horizon.

Keywords: gravity-mediated entanglement; quantum gravity