Fingerprints of quantum entanglement
(PHYSorg.com Physics)

Quantum entanglement is a key feature of quantum computing. Yet, how can researchers verify that a quantum computer actually incorporates large-scale entanglement? Conventional methods require a large number of repeated measurements, presenting research difficulties. Aleksandra Dimi´c from the University of Belgrade and Borivoje Daki´c from the Austrian Academy of Sciences and the University of Vienna have developed a novel method for which even a single experimental run suffices to prove the presence of entanglement. Their results are published in the online open access journal npj Quantum Information.