It has been proven more than once that all atoms that we have around us, such as every atom in our body, follows particle-wave duality. Particle-Wave duality is the fact that every atom is known to be both a particle and wave. Until now, antimatter has not been proven to follow this same logic as testing of antimatter is much more difficult.

Physicists have shown recently that at the level of a positron – the electron equivalent of antimatter – that antimatter also follows particle-wave duality.

To prove this, physicists performed a complicated version of 1927’s “double-slit experiment” which originally proved that matter is both a particle and a wave. Experiments continued on getting more complicated to the point of proving electrons are both a particle and a wave.

 

On May 3rd, a team of Italian and Swiss physicists found a way to have a low energy positron beam that would be used in the slit experiment. They used more than 2 slits.

This work opens the door to a new kind of “interferometry” experiment. Next, they hope to answer questions about the wave nature of more complex matter, and use those results to probe the nature of gravity at very small scales.