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We present an idea for detecting gravitational waves (GWs) by measuring thecurrent induced in a superconducting loop by the rotation of a frame to whichit is attached. The frame experiences a torque caused by a GW propagatingperpendicular to it because it is made of materials of different density inadjacent quadrants. Superconducting Cooper pair system responds symmetricallyto the wave and stays at rest, while the ions of the superconductor are beingaccelerated by the moving frame. This generates an electric current in the loopwhich can be measured precisely by sensitive electronics. For that task theantenna consists of two superconducting loops parallel to each other. One ofthem, the primary loop, rotationally oscillates because of the describedreasons, while the second stays at rest. In the oscillating loop the currentcreates an oscillating magnetic flux. This flux should be compensated due tofluxoid quantization, by the oppositely directed current in the non-moving,secondary loop, in which the ions are at rest, and the Cooper pairs move. Weestimate the resulting signal/noise ratio and discuss the signal detectability.Several designs are envisioned, both for terrestrial and for orbitalarrangements of the antenna.

Superconducting Antenna Concept for Gravitational Wave Radiation