At the ATLAS experiment at CERN, physicists are using the Higgs boson as a testbed for complex quantum phenomena at high energy. Their latest results deliver precise measurements of Higgs-boson properties and provide the first strong evidence of quantum entanglement between two massive vector bosons.

In an article published today in Nature, the ATLAS collaboration reports how it succeeded in observing quantum entanglement at the LHC for the first time.

In a new result from the ATLAS Collaboration, physicists observed – for the first time – quantum entanglement between a pair of quarks. This is the highest-energy measurement of entanglement to date.