  We show how the dynamical modulation of the qubit-field coupling strength in
a circuit quantum electrodynamics architecture mimics the motion of the qubit
at relativistic speeds. This allows us to propose a realistic experiment to
detect microwave photons coming from simulated acceleration radiation.
Moreover, by combining this technique with the dynamical Casimir physics, we
enhance the toolbox for studying relativistic phenomena in quantum field theory
with superconducting circuits.
