Observation of quantum entanglement with top quarks at the ATLAS detector.

ABSTRACT: Entanglement is a key feature of quantum mechanics^1-3, with applications in fields such as metrology, cryptography, quantum information and quantum computation^4-8. It has been observed in a wide variety of systems and length scales, ranging from the microscopic^9-13 to the macroscopic^14-16. However, entanglement remains largely unexplored at the highest accessible energy scales. Here we report the highest-energy observation of entanglement, in top-antitop quark events produced at the Large Hadron Collider, using a proton-proton collision dataset with a centre-of-mass energy of √s = 13 TeV and an integrated luminosity of 140 inverse femtobarns (fb)^-1 recorded with the ATLAS experiment. Spin entanglement is detected from the measurement o

SUBMITTER: ATLAS Collaboration 

PROVIDER: S-EPMC11410654 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature