  Accelerated light has been demonstrated with laser light and diffraction.
Within the diffracting field it is possible to identify a portion that carries
most of the beam energy, which propagates in a curved trajectory as it would
have been accelerated by a gravitational field for instance. Here, we analyze
the effects of this kind of acceleration over the entanglement between twin
beams produced in spontaneous parametric down-conversion. Our results show that
acceleration does not affect entanglement significantly, under ideal
conditions. The optical scheme introduced can be useful in the understanding of
processes in the boundary between gravitation and quantum physics.
