NCTS (South)



PLACER49223, Second Physics Building , NCKU

FIELDQuantum Information Science

SPEAKER Dr. Jean-Daniel Bancal - University of Basel, Switzerland

TITLEDemonstrating Bell correlations in a many-body system with finite statistics

ABSTRACTSeveral recent experiments claimed to demonstrate the presence of entanglement in many-body systems. In light of the limited data accumulated in these experiments, we question here some of these conclusions. Concretely, we identify a statistics loophole that appears in many-body systems experiments and discuss a way to close it. We then apply this analysis on a newly found Bell correlations witness. This leads to upper bounds on the statistics needed to convincingly conclude that a many-body system is either entangled or Bell-correlated.