Figure 1
From: Bright-light detector control emulates the local bounds of Bell-type inequalities

Setup for a CHSH test. The measurement angles shown are arbitrary. Here, for each party, the set of possible outcomes is given by \(\{+,-,?\}\), where “\(+\)” (“−”) are assigned when only the lower (upper) detector clicks and the other detector is silent. “?” is assigned when none of the detectors registers a detection.