The experiment will split photons and test them for "retrocausality". That is, interacting, or entangled, subatomic particles such as two photons can affect each other no matter how far apart in time or space. If it works, the results should be obtained 50 microseconds before the start of the experiment.
"If you do a measurement on one, it has an immediate effect on the other even if they are separated by light years across the universe..If one of the entangled photon's trajectory tilts up, the other one, no matter how distant, will tilt down to compensate".
In other words, quantum is weird and doesn't necessarily obey conventional laws of physics. A'ight?