  We will use Fisher information to properly analyze the quantum weak
equivalence principle. We argue that gravitational waves will be partially
reflected by superconductors. This will occur as the violation of the weak
equivalence principle in Cooper pairs is larger than the surrounding ionic
lattice. Such reflections of virtual gravitational waves by superconductors can
produce a gravitational Casimir effect, which may be detected using currently
available technology.

General Relativity and Quantum Cosmology;Superconductivity;High Energy Physics - Experiment;Quantum Physics