A Novel Cavity-Based Atom Interferometer

Justin Brown, Brian Estey, Paul Hamilton +1 more

N. Mielec, Isabelle Riou, Bess Fang +3 more

Justin Brown, Brian Estey, Paul Hamilton +1 more

Sofus L. Kristensen, Matt Jaffe, Victoria Xu +2 more

The performance of a cavity atom interferometer depends on the Raman pulse efficiency and ac Stark phase cancellation of the beam-splitter operations. The authors model the atom-light interaction inside the cavity and show how to use this model to improve the performance of a cavity atom interferometer.

Frank A. Narducci

M. Zhang

Atomic Kapitza-Dirac (KD) scattering in the classical standing wave of lights is widely used to make the laser-pulsed atom interferometers. In this theoretical work, we show that the dielectric nanoparticle can be used as a weak light source to generate atomic KD scattering and make atom interferometer. We consider a cavity system consisting of atoms and a single nanoparticle, where the nanoparticle is illuminated by the external laser pulses. Atoms and the cavity mirrors are not illuminated by the laser beam, so nanoparticle acts as a pulsed source to excite the cavity mode which non-resonantly excites atomic internal state and generates a weak KD scattering of atomic external motion. We use twice such scattering to split atomic path and consequently use two classical laser pulses to recombine the separated paths for generating the Ramsey-Bordé atom interferometer. This atom interferometer is entangled with the centre-of-mass motion of nanoparticle and could be developed to search the small nonclassicality of motional nanoparticle, because the cavity mode excitation is associated with nanoparticle's position relative to the node or antinode of that optical mode.