Logical Bell state measurements with maximum loss-tolerance threshold using linear optics
Paul Hilaire, Edwin Barnes, Sophia E. Economou, Frédéric Grosshans · Quantum 2.0 Conference and Exhibition · 2022
We show that linear optical logical Bell state measurements—a ubiquitous primitive for quantum information processing—can be realized with theoretically maximum photon loss tolerance (50%), overcoming the previous limit, believed to be at 1/√2.