Quantum networks show nonclassicality beyond standard tests

Maria Ciudad Alañón, Emanuel-Cristian Boghiu, Paolo Abiuso, and Elie Wolfe have demonstrated that correlations within certain quantum networks escape the limitations of Bell’s theorem, a foundational principle in quantum mechanics. The researchers specifically proved this for the also known as the bilocality scenario, identifying instances of network nonclassicality that extend beyond standard tests. They also defined a new criterion to certify the novelty of these network effects; these correlations are…