Bilocal Bell Inequalities Violated by the Quantum Elegant Joint Measurement

Network Bell experiments give rise to a form of quantum nonlocality that conceptually goes beyond Bell's theorem. We investigate here the simplest network, known as bilocality scenario. depart from typical use state measurement in network central node and instead introduce family symmetric isoentangled bases generalize so-called ``elegant joint measurement.'' This leads us report noise-tolerant correlations elude bilocal variable models. Inspired by these correlations, we inequalities for scenario show they admit violations. In contrast many previous studies inequalities, neither our nor their violations are based on standard nonlocality. Moreover, pave way an experimental realization presenting simple two-qubit circuit implementation elegant generalization.