Demonstrating the power of quantum computers, certification of highly entangled measurements and scalable quantum nonlocality

Understand

Increasingly sophisticated quantum computers motivate the exploration of their abilities in certifying genuine quantum phenomena.

• Here, we demonstrate the power of state-of-the-art IBM quantum computers in correlation experiments inspired by quantum networks.
• Our experiments feature up to 12 qubits and require the implementation of paradigmatic Bell-State Measurements for scalable entanglement-swapping.
• First, we demonstrate quantum correlations that defy classical models in up to nine-qubit systems while only assuming that the quantum computer operates on qubits.