  Light cone spreading of correlations and entanglement is a key feature of the
non-equilibrium quench dynamics of many-body quantum systems. First proposed
theoretically, it has been experimentally revealed in cold-atomic gases and it
is expected to be a generic characteristic of any quench in systems with
short-range interactions and no disorder. Conversely, here we propose a
mechanism that, through confinement of the elementary excitations, strongly
suppresses the light-cone spreading. Confinement is a celebrated concept in
particle physics, but it also exists in condensed matter systems, most notably
in one spatial dimension where it has been experimentally observed. Our results
are obtained for the Ising spin chain with transverse and longitudinal magnetic
field, but the proposed mechanism is of general validity since it is based on
the sole concept of confinement and it should be easily observed in cold atom
experiments.
