  The features of correlated Michelson interferometers are for describing the
analysis of Einsteinian spacetime models, and the quantum geometries pertinent
with descriptions of GR compatible with particle Physics. Such apparati allow
for the spectral decomposition of fractional Planck-scale displacements
correlations and fractional Plancktime- interval correlations for kinematical
investigations in particle Physics on emerging Minkowski background, and for
models which admit GR as a limit after cosmological implementations for
Poincar\'e particles content.
