We propose an approach that allows to systematically take into account gravity in quantum particle physics. It is based on field theory and the general principle of relativity. These are used build a model for particles curved spacetime. compute by its means deviation from classical geodesic Earth's gravitational field. This shows free fall depends quantum-matter properties. Specifically, we fi...

A laser radar using an array of heterodyne detectors offers the possibility of fine resolution angleangle imaging. The heterodyne measurements, however, are subject to phase errors due to atmospheric turbulence and mechanical misalignment. A method is described that employs digital shearing of the heterodyne measurements as a means to remove phase errors. By this method large phase errors can b...