Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session V01: Poster Session III (4:00-6:00pm, EDT)
4:00 PM,
Thursday, June 2, 2022
Room: Grand Ballroom C
Abstract: V01.00080 : Upgrades for the optical lattice atom interferometer*
Presenter:
Holger Mueller
(University of California, Berkeley)
Authors:
Miguel Ceja
(University of California, Berkeley)
James Egelhoff
(University of California, Berkeley)
Cristian D Panda
(UC Berkeley)
Andrew Reynoso
(University of California, Berkeley)
Matthew Tao
(University of California, Berkeley)
Victoria Xu
(University of California, Berkeley)
Holger Mueller
(University of California, Berkeley)
and inertial sensing applications. However, their performance has been
limited by the available interrogation time of atoms freely falling in
Earth's gravitational field. Recently, we demonstrated a trapped atom
interferometer with visible interference fringes after 25 seconds of
interrogation time. The spatially separated wave packets are held by the
resonant mode of an optical cavity, rather than dropped in free fall.
After seconds of hold time, the gravitational potential energy
differences from micrometers of vertical separation can generate
megaradians of interferometer phase. In addition, this trapped geometry
can strongly suppress the phase variance caused by vibrations, thus
addressing the dominant noise source in atom-interferometric
gravimeters. We describe recent progress on improving long-term
stability, imaging, trap depth and other interferometer capabilities.
*We acknoweldge funding from the NSF and ONR for this project.
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