Another confirmation of Einstein's GR - at the quantum level

Quantum mechanics and General Relativity are the pillars of modern physics, but are still two distinct theories that physicists since Einstein cannot combine into a single, coherent and consistent theory of nature. But an interesting experiment was recently done and published, where the core concept of GR - the principle of equivalence - was shown to hold for quantum objects. 

At very cold temperatures, atoms behave more like waves than particles. Using special techniques, atoms in this state can be split, with one part suspended by magnetic fields and the other allowed to free Fall. When those two 'pieces' of the atom are recombined, any interference between the states can be measured and compared to predictions from general relativity calculations for these specific conditions. The results show how the GR predictions are correct in the experimental data. This is new layer of confirmation of Einstein's theory, and it will be interesting to see what variations of the experiment are dreamed up by researchers around the world, now that they have knowledge of this, along with new types of questions and scenarios people will develop!