  Measurements on a single quantum system at different times reveal rich
non-classical correlations similar to those observed in spatially separated
multi-partite systems. Here we introduce a theory framework that unifies the
description of temporal, spatial, and spatio-temporal resources for quantum
correlations. We identify, and experimentally demonstrate simple cases where an
exact mapping between the domains is possible. We then identify correlation
resources in arbitrary situations, where not all spatial quantum states
correspond to a process and not all temporal measurements have a spatial
analogue. These results provide a starting point for the systematic exploration
of multi-point temporal correlations as a powerful resource for quantum
information processing.
