Dear all,

Today Marc-Olivier Renou from Geneva will tell us all about "Self testing the Bell State Measurement". We will make it a short meeting so that we can go to Sandu's Schrödinger lecture at 16:45 (HPH G 3).

Self testing the Bell State Measurement Self-testing refers to the possibility of characterizing an unknown quantum device based only on the observed statistics. Here we develop methods for self-testing entangled quantum measurements, a key element for quantum networks. Our approach is based on the natural assumption that separated physical sources in a network should be considered independent. This provides a natural formulation of the problem of certifying entangled measurements. Considering the setup of entanglement swapping, we derive a robust self-test for the Bell-state measurement, tolerating noise levels up to  5%. We also discuss generalizations to other entangled measurements.

Best,

Lídia