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 Dimić from the University of Belgrade and Borivoje Dakić 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.
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