Figure 24From: The deep space quantum link: prospective fundamental physics experiments using long-baseline quantum opticsSpacetime diagrams of the Bell test (a), quantum teleportation (b) and delayed-choice entanglement swapping, where Diana may choose to perform a joint measurement (c) or not (d). Here, “×” and “∘” represent local measurement and operation events, respectively. The black dotted lines and thick solid lines represent the worldlines of the participating quantum objectsBack to article page