Figure 2

Second loophole-free Bell test results.

(a) Summary of the data and the CHSH correlations. We record a total of n₂ = 300 trials of the Bell test. Dotted lines indicate the expected correlation based on the spin readout fidelities and the characterization measurements presented in Hensen et al.¹⁷. Shown are data for both ψ⁻ heralded events (red, two clicks in different APD’s at location C) and for ψ⁺ heralded events (blue, two clicks in the same APD). Numbers in bars represent the amount of correlated and anti-correlated outcomes respectively, for ψ⁻ (red) and ψ⁺ (orange). Error bars shown are , with n_(a,b) the number of events with inputs (a, b).