# Observation of Einstein’s equivalence principle in quantum-m > Live situation record from CLSTR: https://clstr.news/situations/observation-of-einsteins-equivalence-principle-in-quantum-m > Updated: 2026-09-04T21:26:56.000Z. Sources: 14. Developments: 2. An international team of researchers, led by Ben-Gurion University of the Negev in collaboration with the University of Ulm and the University of Oxford, has observed the effects of gravity on falling quantum objects. Using a device called the Quantum Galileo Interferometer, scientists measured changes in the quantum properties of atoms to confirm that Einstein’s equivalence principle remains consistent with quantum mechanics. The experiment involved cooling rubidium atoms to near absolute zero and placing them into a quantum superposition. This allowed the atoms' waves to travel two paths simultaneously: one path held magnetically against gravity and another following a ballistic free-fall trajectory. The resulting interference pattern matched the phase shift predicted by the equivalence principle. While the study does not provide a unified theory of quantum gravity or prove that gravity is a quantum phenomenon, it demonstrates that fundamental gravitational principles hold true at the quantum scale. Future research may utilize heavier objects, such as nanodiamonds, to explore regimes where current theories might break down. ## Timeline ### 2026-09-04: Physicists confirm Einstein’s equivalence principle in quantum experiments Physicists have experimentally confirmed that Einstein’s equivalence principle holds true for falling quantum atoms, bridging a key gap between general relativity and quantum mechanics. 7 sources. https://clstr.news/cluster/physicists-confirm-einsteins-equivalence-principle-in-quantum-experiments ### 2026-09-02: Einstein’s equivalence principle observed in quantum objects Physicists have observed Einstein’s equivalence principle acting on quantum objects for the first time, demonstrating consistency between general relativity and quantum mechanics in a new experiment. 7 sources. https://clstr.news/cluster/einsteins-equivalence-principle-observed-in-quantum-physics-experiment --- Cite as: Observation of Einstein’s equivalence principle in quantum-m. CLSTR, https://clstr.news/situations/observation-of-einsteins-equivalence-principle-in-quantum-m