Fig. 7: Triangle scenario from extended Bell scenario.
From: Experimental nonclassicality in a causal network without assuming freedom of choice
a Extended Bell scenario with measurement dependence. Relative to the standard Bell scenario, the source λAB is presumed to influence not only the outcomes a1 and b1, but the setting variables a0 and b0 as well. This allows for measurement dependence and can describe superdeterministic models73. b Extended Bell causal structure with measurement dependence mapped into the triangle scenario. Relative to the standard Bell scenario, one posits an additional laboratory, associated to Charlie, an additional source λAC between Alice and Charlie and an additional source λBC between Bob and Charlie. Correlations between a0 and c0, c1 imply an upper bound on the potential dependence of a0 on λAB, described by the entropic inequality in Eq. (8). Similarly, correlations between b0 and c0, c1 imply an upper bound on the potential dependence of b0 on λAB.
