An atom interferometer for measuring loss of coherence from an atom   mirror
  We describe an atom interferometer to study the coherence of atoms reflected from an evanescent wave mirror. The interferometer is sensitive to the loss of phase coherence induced by the defects in the mirror. The results are consistent with and complementary to recent measurements of specular reflection. 
Jerome Esteve (LCFIO), David Stevens (LCFIO), Christine Aussibal   (LCFIO), Nathalie Westbrook (LCFIO), Alain Aspect (LCFIO)...