Figure 9
From: Generalized time-bin quantum random number generator with uncharacterized devices
A) Illustration of binary quantum states with significant overlap, exemplified here by coherent states in phase space. Depending on the input x, either the red or blue state is transmitted. Due to their high overlap, measurements in the intersecting area yield uncertain information about the source, making it impossible for measurement strategies to perfectly distinguish between these states. B) The plot displays potential conditional probabilities with min-entropy values depicted through a colour scale. It demonstrates that any correlation not meeting the set assumptions results in a min-entropy value of zero, indicating zero extractable randomness