Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session B08: Control and Interactions in Trapped Ions
10:45 AM–12:45 PM,
Tuesday, June 4, 2024
Room: 203B
Chair: Jia Wang, Swinburne University of Technology
Abstract: B08.00007 : Enhancing Coherent Spin-Motion and Spin-Spin Interactions through Optomechanical Tuning with additional High-Fidelity Imaging for Two-Dimensional Ion Crystals in Penning Traps*
11:57 AM–12:09 PM
Presenter:
Joseph H Pham
(University of Sydney)
Authors:
Joseph H Pham
(University of Sydney)
Robert N Wolf
(University of Sydney)
Julian Y Jee
(University of Sydney)
Michael J Biercuk
(University of Sydney)
Alexander Rischka
(Q-ctrl)
The system incorporates active optical positioners in the limited space of a superconducting magnet, allowing precise tuning of the optical angle-of-incidence on the ion crystals [1]. When combined with electromagnetically induced transparency cooling, the experimental results show a two-fold increase in coherent to incoherent interaction strength. Notably, the system exhibits stability of 2 x 10-3 degrees per hour, validating its suitability for long-duration experiments and highlighting its significance for future quantum simulations and sensing applications.
Additionally, we present a method for achieving high-fidelity state discrimination and precise localization of dynamic 2D ion crystals [2]. Our approach combines a high-data-rate, spatially-resolving, timestamping detector with a neural network to identify individual ion positions. State determination is performed using a maximum likelihood method, resulting in detection fidelities of 94(2)% for crystals containing 110 ions.The presented methodologies offer a robust and scalable framework for exploring the capabilities of trapped ion-based quantum systems in a variety of quantum simulation and sensing applications.
*Australian Research Council Centre of Excellence for Engineered Quantum Systems (CE170100009), a private grant from H. and A. Harley, DE190101137, Sydney Quantum Academy and an Australian Government Research Training Program Scholarship.
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