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The study is a simulation-based proposal, not an experiment. It suggests that repeated interferometer splitting can increase positional entanglement between massive objects under decoherence, a possible route to probing quantum gravity on a tabletop. Readers should treat the claims as theoretical until experimental groups test the protocol under realistic noise.
London Team Bounds Gravity’s Impact on Quantum Entanglement
Can entangled masses ever overcome inherent limitations to detect gravitational interactions? Simulations reveal protocols involving repeated interferometer splits consistently enhance entanglement generation, even under realistic conditions where coherence is lost across *all* tested decoherence rates. This resilience implies new avenues for probing quantum gravity via tabletop experiments previously thought impossible.
Probing quantum gravity through entanglement between masses requires preparing spatial superpositions using interferometers; however, scaling such experiments presents key challenges. Protocols involving repeated splitting within these interferometers, each stage doubling the number of paths, enhance gravitational interactions. Numerical simulations demonstrate that this approach improves the generation of positional entanglement across all tested decoherence rates, suggesting increased sensitivity for…
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