We propose a novel idea to detect dark photon in the gravitational wave (GW)
experiments. Our setups are capable to perform the whole process of dark photon
production, its decay products, and new physics signal discovery. This "mini
LHC" is inspired from the recent idea of the dark photon detection using the
laser light in light shinning through the wall (LSW) experiments such as ALPS
II. Taking the sub-frequency light emitted from the laser source as the new
physics signal, we show that the sensitivity of our proposal is two order
magnitude better than the original idea in the LSW studies.Comment: 5 figures, 1 tabl