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 S04: Focus Session: Advances in the Control of Rydberg Atom Arrays
10:30 AM–12:30 PM,
Thursday, June 8, 2023
Room: Conference Theater
Chair: Jacob Covey, UIUC
Abstract: S04.00003 : Narrow-line imaging of single strontium atoms in shallow optical tweezers*
11:30 AM–11:42 AM
Presenter:
Alexander Urech
(University of Amsterdam, Qusoft)
Authors:
Alexander Urech
(University of Amsterdam, Qusoft)
Ivo Knottnerus
(University of Amsterdam, Qusoft, Technical University Eindhoven)
Yu Chih Tseng
(Unviersity of Amsterdam)
Robert J C Spreeuw
(University of Amsterdam, Qusoft)
Florian Schreck
(University of Amsterdam, Qusoft)
broad 1S0 - 1P1 transition. For Yb, use of the narrow (183 kHz-wide) 1S0 - 3P1 transition
for simultaneous imaging and cooling has been demonstrated in tweezers with a magic
wavelength for the imaging transition. We demonstrate high-fidelity imaging of sin-
gle Sr atoms using its even narrower (7.4 kHz-wide) 1S0 - 3P1 transition. The atoms are
trapped in non-magic-wavelength tweezers. We detect the photons scattered during
Sisyphus cooling, thus keeping the atoms near the motional ground state of the tweezer
throughout imaging. The fidelity of detection is 0.9991(4) with a survival probability exceeding
0.99. An atom in a tweezer can be held under imaging conditions for 79(3) seconds
allowing for hundreds of images to be taken, limited mainly by background gas colli-
sions. The use of a fully closed (cycling) transition for imaging will provide a useful
tool for state specific detection. We detect atoms in an array of 36 tweezers with 813.4-
nm light and trap depths of 135(20) μK. This trap depth is three times shallower than
typically used for imaging on the broad 1S0 - 1P1 transition. Narrow-line imaging opens
the possibility to even further reduce this trap depth, as long as all trap frequencies are
kept larger than the imaging transition linewidth. Imaging using a narrow-linewidth
transition in a non-magic-wavelength tweezer also allows for selective imaging of a
given tweezer. As a demonstration, we selectively image (hide) a single tweezer from
the array. This provides a useful tool for quantum error correction protocols.
*This work is supported by the Netherlands Organization for Scientific Research (NWO) under the Gravitation grant No. 024.003.037, Quantum Software Consortium, and under grant No. FOM-153.This work is also supported by the Dutch Ministry of Economic Affairs and Climate Policy (EZK), as part of the Quantum Delta NL programme.
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