  We study the quantum stress tensor correlation function for a massless scalar
field in a flat two-dimensional spacetime containing a moving mirror. We
construct the correlation functions for right-moving and left-moving fluxes for
an arbitrary trajectory, and then specialize them to the case of a mirror
trajectory for which the expectation value of the stress tensor describes a
pair of delta-function pulses, one of negative energy and one of positive
energy. The flux correlation function describes the fluctuations around this
mean stress tensor, and reveals subtle changes in the correlations between
regions where the mean flux vanishes.
