Bell Testing Quantum Entanglement



 A new proposal for Bell testing quantum entanglement was released in Physical Review X. Quantum entanglement is the puzzling concept of 'spooky action at a distance'. This is where grouped particle's quantum states can not be described independently of each other. 

The Bell test will prove no hidden variables are actively involved in quantum entanglement. In the past, the Bell test had only been done for pairs of entangled photons. This led to the 2022 Nobel Prize in Physics. 

The team included Dr. Marco Ruberti, Professor Vitali Auerbukh and Professor Florian Mintert. They have invented a way to use the Bell test for the process of photoionization. This is where a photon causes an electron to be ejected from an atom. This leaves the electron and the ion quantum entangled. 

The team used advanced theories to quantify their beliefs. They proved it can be done by simultaneously measuring the spin of the photo electron and the photo emission of the remaining ion.

More testing to come!


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