title: Multiaxis inertial sensing with long-time point source atom interferometry.
abstract: We show that light-pulse atom interferometry with atomic point sources and spatially resolved detection enables multiaxis (two rotation, one acceleration) precision inertial sensing at long interrogation times. Using this method, we demonstrate a light-pulse atom interferometer for 87Rb with 1.4 cm peak wave packet separation and a duration of 2T=2.3 s. The inferred acceleration sensitivity of each shot is 6.7×10(-12)g, which improves on previous limits by more than 2 orders of magnitude. We also measure Earth's rotation rate with a precision of 200 nrad/s.
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: Susannah M
authors.initials: SM
authors.lastname: Dickerson
authors.forename: Jason M
authors.initials: JM
authors.lastname: Hogan
authors.forename: Alex
authors.initials: A
authors.lastname: Sugarbaker
authors.forename: David M S
authors.initials: DM
authors.lastname: Johnson
authors.forename: Mark A
authors.initials: MA
authors.lastname: Kasevich