Bulletin of the American Physical Society
54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 68, Number 7
Monday–Friday, June 5–9, 2023; Spokane, Washington
Session H07: Dipolar BECs
8:00 AM–9:24 AM,
Wednesday, June 7, 2023
Room: 206 B
Chair: Matt Grau, Old Dominion University
Abstract: H07.00003 : Observation of superradiant light scattering from a phase fluctuating dipolarBose-Einstein condensate*
8:24 AM–8:36 AM
Presenter:
Mingchen Huang
(Hong Kong University of Science and Tech)
Authors:
Mingchen Huang
(Hong Kong University of Science and Tech)
Bojeong Seo
(Hong Kong University of Science and Tech)
Ziting Chen
(Hong Kong University of Science and Tech)
Mithilesh K Parit
(Hong Kong University of Science and Tech)
Yifei He
(Hong Kong University of Science and Tech)
Haoting Zhen
(Hong Kong University of Science and Tech)
Gyu-Boong Jo
(Hong Kong University of Science and Tech)
using its unique coherence property. However, most experiments have explored superradiant light
scattering with closed-shell atoms (e.g. alkali and alkaline-earth-like atoms) in the regime where
only s-wave interactions are present. Here, we experimentally combine tunable s-wave scattering
with dipolar interactions in a BEC of Er atoms. By tuning s-wave interaction strength through
the Feshbach resonance, we tune the superradiance threshold with increasing phase fluctuations.
We also observe an asymmetric superradiant scattering in a dipolar BEC by changing the direction
of the external magnetic field. This collective light scattering opens a new way of probing dipolar
quantum liquids in a BEC.
*We acknowledges the generous support from the Research Grants Councils of HongKong, Guangdong Joint laboratory and the Harilela foundation through 16306119, 16302420,16302821,16306321,16306922, C6005-17G, C6009-20G, RFS2122-6S04 and NHKUST636-22, respectively.
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