  Future gravitational wave detectors have been projected to be able to probe
the nature of compact objects in great detail. In this work, we study the
potential observability of the small length scale physics near black hole
horizon with the tidal deformability of the compact objects in an inspiraling
binary. We find that it is possible to probe them with extreme mass ratio
inspirals. We discuss how the quantum effects can affect the gravitational wave
observables. This as a consequence is bound to shape our understanding of the
quantum scale near the horizon.
