On detecting absolute quantum mechanical phase differences with superfluid interferometers

We show through numerical simulations that absolute quantum mechanical phase differences could be observed using an asymmetric superfluid quantum interference grating. By balancing the dynamic range and the degree of change required per period in an interference pattern, a device could be optimized and used to probe heretofore inaccessible quantum subtleties. We make connections to experimental results and discuss possible applications for such systems.