1210.0033 (G. Edward Marti et al.)

A Collective Excitation Interferometer for Rotation Sensing with a
Trapped Bose-Einstein Condensate    [PDF]

G. Edward Marti, Ryan Olf, Dan M. Stamper-Kurn

Compact inertial sensing schemes using trapped- and guided-atom interferometers have been unable to achieve high precision because of uncontrolled phase errors caused by trapping potentials and interactions. Here, we demonstrate an atom-shot-noise limited acoustic interferometer that uses sound waves in a toroidal Bose-Einstein condensate to measure rotations. Our system operates at $10^4 - 10^6$ times higher density and in a volume $10^9$ times smaller than free-falling atom interferometers.

View original: http://arxiv.org/abs/1210.0033