  In the context of ghost-free infinite derivative gravity we consider the
single graviton exchange either between two spinless particles or between a
spinless particle and a photon. To this end, we compute the gravitational
potential for both cases and derive the quantum correction that arises at the
linearized level. In the local theory it is well-known that such a correction
is in the form of a Dirac delta function. Here we show that, for the nonlocal
theory and in contrast to the local theory, the quantum correction is smeared
out and takes on non-zero values for a non-zero separation between the two
particles.
