Bilocal Bell inequalities violated by the quantum Elegant Joint Measurement

Understand

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 the bilocality scenario.
• We depart from the typical use of the Bell State Measurement in the network central node and instead introduce a family of symmetric iso-entangled measurement bases that generalise the so-called Elegant Joint Measurement.
• This leads us to report noise-tolerant quantum correlations that elude bilocal variable models.