The experiment could help to form a unified theory of quantum gravity.
Scientists have, for the first time ever, made light appear to move simultaneously forward and backward in time.
The new method, achieved by an international group of scientists, could help create novel quantum computing techniques and give scientists a better understanding of quantum gravity, aIt was achieved thanks to a combination of two principles that form a part of the bizarre world of quantum mechanics.
Essentially, this was achieved via the convergence of quantum superposition and charge, parity, and time-reversal symmetry, both of which are principles of quantum mechanics — meaning they describe the physical properties of atoms and subatomic particles. The former, quantum superposition, is a phenomenon that sees tiny particles exist in several different states until they are observed, while the latter, CPT, is a principle that states any system containing particles will obey the same physical laws, even if their charge, spatial coordinates, and movements are precisely reversed.
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