The Sagnac effect: 20 years of development in matter-wave interferometry
  Since the first atom interferometry experiments in 1991, measurements of rotation through the Sagnac effect in open-area atom interferometers has been studied. These studies have demonstrated very high sensitivity which can compete with state-of-the-art optical Sagnac interferometers. Since the early 2000s, these developments have been motivated by possible applications in inertial guidance and geophysics. Most matter-wave interferometers that have been investigated since then are based on two-photon Raman transitions for the manipulation of atomic wave packets. Results from the two most studied configurations, a space-domain interferometer with atomic beams and a time-domain interferometer with cold atoms, are presented and compared. Finally, the latest generation of cold atom interferometers and their preliminary results are presented. 
Brynle Barrett, Remi Geiger, Indranil Dutta, Matthieu Meunier,   Benjamin Canuel, Alexandre Gauguet, Philippe Bouyer, Arnaud...
physics.atom-ph physics.optics quant-ph