In one minute

Li, Yang, Fang, Baker, Stephenson and Wen study a detector for high-frequency gravitational waves that couples a Gaussian microwave beam, a static magnetic field and fractal membranes or equivalent microwave lenses. Unlike the pure inverse Gertsenshtein effect, this scheme from Chinese and US groups combines synchro-resonance with the inverse Gertsenshtein effect. The measurable signal is the transverse first-order perturbative photon flux, not the second-order or longitudinal flux. The fluxes have different signal-to-noise ratios at different receiving surfaces. For typical laboratory conditions and wave amplitudes of 10^-26 to 10^-30 at 5 GHz with about 1 Hz bandwidth, the signal needs roughly 10^3 to 10^5 seconds of accumulation.

Signal photon flux and background noise in a coupling electromagnetic detecting system for high-frequency gravitational waves