  With the long-term goal of studying models of quantum gravity in the lab, we
propose holographic teleportation protocols that can be readily executed in
table-top experiments. These protocols exhibit similar behavior to that seen in
the recent traversable wormhole constructions of [1,2]: information that is
scrambled into one half of an entangled system will, following a weak coupling
between the two halves, unscramble into the other half. We introduce the
concept of teleportation by size to capture how the physics of operator-size
growth naturally leads to information transmission. The transmission of a
signal through a semi-classical holographic wormhole corresponds to a rather
special property of the operator-size distribution we call size winding. For
more general systems (which may not have a clean emergent geometry), we argue
that imperfect size winding is a generalization of the traversable wormhole
phenomenon. In addition, a form of signalling continues to function at high
temperature and at large times for generic chaotic systems, even though it does
not correspond to a signal going through a geometrical wormhole, but rather to
an interference effect involving macroscopically different emergent geometries.
Finally, we outline implementations feasible with current technology in two
experimental platforms: Rydberg atom arrays and trapped ions.
