  Recently, quantum fluctuations in the modular Hamiltonian have been
calculated and found to be $\langle \Delta K^2 \rangle = \frac{A}{4 G_N}$ in
the vacuum state of AdS/CFT restricted to a volume bounded by a Ryu-Takayanagi
surface with area $A$. Furthermore, it was suggested that such vacuum
fluctuations in the modular Hamiltonian give rise to fluctuations in the metric
that could be observed in an interferometer on a flat 4-dimensional brane. Here
we propose a simple model of these vacuum fluctuations as a bosonic
degree-of-freedom that we call the pixellon. The pixellon has a
non-relativistic dispersion with Planck mass and a Bose-Einstein momentum
distribution. Because the momentum of a pixellon mode measurable in an
experiment is very low (on the order of the inverse measuring apparatus size),
the occupation number of these bosonic vacuum modes is high, $N = \sqrt{\langle
\Delta K^2 \rangle}$. We gravitationally couple the pixellons to the mirrors of
an interferometer, and utilize the Feynman-Vernon influence functional to
calculate the fluctuations in the mirror position. We find that these low
frequency fluctuations are observably large, in agreement with previous work.
