Single photon Michelson-Morley experiment via de Broglie-Bohm picture:   An interpretation based on the hypothesis of frame dragging
  The Michelson-Morley experiment is considered via a single photon interferometer and a hypothesis of the dragging of the permittivity of free space and permeability of free space. The Michelson-Morley experimental results can be interpreted using de Broglie-Bohm picture. In the global positioning system (GPS) experiment, isotropic constancy of the speed of light, c, was confirmed by direct one way measurement. That is, Michelson-Morley experiments without interference are confirmed every day; therefore the hypothesis of frame dragging is a suitable explanation of the Michelson-Morley experimental results. 
Masanori Sato