This New Experiment Could Finally Unite The Two Biggest Theories in Physics (ScienceAlert)

MIKE MCRAE
19 JAN 2018

An idea for an experiment that could unite the stubborn fields of quantum mechanics and general relativity has been given new life by two groups of physicists from the UK.

The fact that quantum theory doesn't play well with gravity is a massive stumbling block in physics, one that has long eluded some of the greatest minds in science.
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To get some sort of hook on common ground, renowned American physicist Richard Feynman came up with an experimental design back in 1957.
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But now they're proposing a slightly different approach to the experiment that could iron out some of the test's shortfalls, and just maybe solve one of the biggest problems in modern science.

A duo of physicists from the University of Oxford set out a proof that any two quantum systems could be entangled through a third system, but only if it too was quantised.
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Based on this principle, a second team from UCL proposed details of an actual experiment that could use a hypothetical 'quantum gravity mediator' to entangle the spin of the two separate masses.
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more (incl. links): https://www.sciencealert.com/quantum-mechanics-unify-general-relativity-gravitational-field-experiment-proof?perpetual=yes&limitstart=1