Listening Where Waves Stay Silent (A15): Bound states in the continuum, moving phases and quantum rotors as vacuum receivers tuned by the Compton lock

A15 of the Gravity Resonance series. This paper proposes a laboratory test of a superconducting ring prepared at the Compton lock, where the ring’s current and radius satisfy IR = 2ec. In the simplest case this means one participating Cooper pair per reduced Compton length of a pair along the rim. The question is simple: does such a ring produce any response beyond its ordinary electromagnetic fields? To listen for it, quiet quantum systems are placed next to the ring as vacuum receivers. The first is a silent electronic state: a bound state in the continuum that sits inside a metal yet does not leak into it, because its escape is cancelled by interference. Thinel et al. observed such states around palladium vacancies in Pd₅AlI₂ (arXiv 2024; Science 2026). The idea of a silent point was reached independently within this series in October 2026. This proposal uses such states as the receiver for a locked ring. The paper describes: the source; the receiver and its readings; a calibrated leak that makes a weak, steady effect appear linearly; controls that separate the lock from ordinary effects. It adds moving phases (a rotating lock wheel read by a laser shutter, and a gyroscope lock) and quantum rotors as receivers: hydrogen inside a C₆₀ cage, tantalum-180m nuclei inside a tantalum ring, and a thorium nuclear clock. It explains how a tabletop test can point toward the Planck scale: not by seeing small distances, but by measuring tiny energies and small lags that add up over time. No size of effect is predicted. Every test has a clean null outcome that is itself a result. Series index and A11: https://doi.org/10.5281/zenodo.22825134Contact: gravity.resonance@proton.me Keywords: Compton lock; superconducting ring; bound states in the continuum; silent point; vacuum receiver; Pd5AlI2; calibrated leak; quantum rotors; H2@C60; nuclear clock; Planck scale