A simple superconductor quantum interference device for testing gravity

Abstract

A simple tabletop setup based on a superconducting quantum interference device is proposed for testing the gravitational interaction. A D-shaped superconducting loop has the straight segment immersed inside a massive sphere while the half-circle segment is wrapped around the sphere. The superconducting condensate within the straight arm of the loop thus bathes inside a gravitational simple harmonic oscillator potential while the condensate in the half-circle arm bathes in the constant gravitational potential around the sphere. The resulting phase difference at the Josephson junctions on both sides of the straight arm induces a sinusoidal electric current that has a frequency determined by the precise gravitational potential due to the massive sphere.

20 pages, 1 figure, references updated, title slightly improved

References in corpus (6)

• Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
• Matter wave lensing to picokelvin temperatures
• Testing Gravity with Cold-Atom Interferometers
• Review of short-range gravity experiments in the LHC era
• Dark-Matter-Induced Weak Equivalence Principle Violation
• Landau levels in a gravitational field: The Levi-Civita and Kerr spacetimes case