  We examine the prospects of utilizing matter-wave Fabry-P\'{e}rot
interferometers for enhanced inertial sensing applications. Our study explores
such tunneling-based sensors for the measurement of accelerations in two
configurations: (a) a transmission setup, where the initial wave packet is
transmitted through the cavity and (b) an out-tunneling scheme with
intra-cavity generated initial states lacking a classical counterpart. We
perform numerical simulations of the complete dynamics of the quantum wave
packet, investigate the tunneling through a matter-wave cavity formed by
realistic optical potentials and determine the impact of interactions between
atoms. As a consequence we estimate the prospective sensitivities to inertial
forces for both proposed configurations and show their feasibility for serving
as inertial sensors.
