Energy landscape shaping for robust control of atoms in optical lattices

Weidner, C A; O’Neil, S P; Jonckheere, E A; Langbein, F C; Shermer, Sophie

doi:10.1088/1367-2630/addc0d

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Energy landscape shaping for robust control of atoms in optical lattices

C A Weidner

, S P O’Neil

, E A Jonckheere

, F C Langbein

, Sophie Shermer

New Journal of Physics, Volume: 27, Issue: 6, Start page: 064503

Swansea University Author: Sophie Shermer

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DOI (Published version): 10.1088/1367-2630/addc0d

Abstract

Robust quantum control is crucial for realizing practical quantum technologies. Energy landscape shaping offers an alternative to conventional dynamic control, providing theoretically enhanced robustness and simplifying implementation for certain applications. This work demonstrates the feasibility...

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Published in:	New Journal of Physics
ISSN:	1367-2630
Published:	IOP Publishing 2025
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa69659

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spelling	2025-06-09T15:50:35.2989376 v2 69659 2025-06-09 Energy landscape shaping for robust control of atoms in optical lattices 6ebef22eb31eafc75aedcf5bfe487777 0000-0002-5530-7750 Sophie Shermer Sophie Shermer true false 2025-06-09 BGPS Robust quantum control is crucial for realizing practical quantum technologies. Energy landscape shaping offers an alternative to conventional dynamic control, providing theoretically enhanced robustness and simplifying implementation for certain applications. This work demonstrates the feasibility of robust energy landscape control in a practical implementation with ultracold atoms. We leverage a digital mirror device (DMD) to shape optical potentials, creating complex energy landscapes. To achieve a desired objective, such as efficient quantum state transfer, we formulate a novel hybrid optimization approach that effectively handles both continuous (laser power) and discrete (DMD pixel activation) control parameters. This approach combines constrained quasi-Newton methods with surrogate models for efficient exploration of the vast parameter space. Furthermore, we introduce a framework for analyzing the robustness of the resulting control schemes against experimental uncertainties. By modeling uncertainties as structured perturbations, we systematically assess controller performance and identify robust solutions. We apply these techniques to maximize spin transfer in a chain of trapped atoms, achieving high-fidelity control while maintaining robustness. Our findings provide insights into the experimental viability of controlled spin transfer in cold atom systems. More broadly, the presented optimization and robustness analysis methods apply to a wide range of quantum control problems, offering a toolkit for designing and evaluating robust controllers in complex experimental settings. Journal Article New Journal of Physics 27 6 064503 IOP Publishing 1367-2630 cold atoms, optical lattices, quantum control, energy landscape 4 6 2025 2025-06-04 10.1088/1367-2630/addc0d COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University SU Library paid the OA fee (TA Institutional Deal) Research Councils UK Grant: EP/Y004728/1 2025-06-09T15:50:35.2989376 2025-06-09T15:39:18.6627477 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics C A Weidner 0000-0001-7776-9836 1 S P O’Neil 0000-0001-6669-4947 2 E A Jonckheere 0000-0002-7205-4273 3 F C Langbein 0000-0002-3379-0323 4 Sophie Shermer 0000-0002-5530-7750 5 69659__34432__0a708238b21043c6a74e4bf2d2c9b0ce.pdf pdf.pdf 2025-06-09T15:39:18.6626746 Output 1131860 application/pdf Version of Record true © 2025 The Author(s). Original Content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. true eng https://creativecommons.org/licenses/by/4.0/
title	Energy landscape shaping for robust control of atoms in optical lattices
spellingShingle	Energy landscape shaping for robust control of atoms in optical lattices Sophie Shermer
title_short	Energy landscape shaping for robust control of atoms in optical lattices
title_full	Energy landscape shaping for robust control of atoms in optical lattices
title_fullStr	Energy landscape shaping for robust control of atoms in optical lattices
title_full_unstemmed	Energy landscape shaping for robust control of atoms in optical lattices
title_sort	Energy landscape shaping for robust control of atoms in optical lattices
author_id_str_mv	6ebef22eb31eafc75aedcf5bfe487777
author_id_fullname_str_mv	6ebef22eb31eafc75aedcf5bfe487777_***_Sophie Shermer
author	Sophie Shermer
author2	C A Weidner S P O’Neil E A Jonckheere F C Langbein Sophie Shermer
format	Journal article
container_title	New Journal of Physics
container_volume	27
container_issue	6
container_start_page	064503
publishDate	2025
institution	Swansea University
issn	1367-2630
doi_str_mv	10.1088/1367-2630/addc0d
publisher	IOP Publishing
college_str	Faculty of Science and Engineering
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hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
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hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
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description	Robust quantum control is crucial for realizing practical quantum technologies. Energy landscape shaping offers an alternative to conventional dynamic control, providing theoretically enhanced robustness and simplifying implementation for certain applications. This work demonstrates the feasibility of robust energy landscape control in a practical implementation with ultracold atoms. We leverage a digital mirror device (DMD) to shape optical potentials, creating complex energy landscapes. To achieve a desired objective, such as efficient quantum state transfer, we formulate a novel hybrid optimization approach that effectively handles both continuous (laser power) and discrete (DMD pixel activation) control parameters. This approach combines constrained quasi-Newton methods with surrogate models for efficient exploration of the vast parameter space. Furthermore, we introduce a framework for analyzing the robustness of the resulting control schemes against experimental uncertainties. By modeling uncertainties as structured perturbations, we systematically assess controller performance and identify robust solutions. We apply these techniques to maximize spin transfer in a chain of trapped atoms, achieving high-fidelity control while maintaining robustness. Our findings provide insights into the experimental viability of controlled spin transfer in cold atom systems. More broadly, the presented optimization and robustness analysis methods apply to a wide range of quantum control problems, offering a toolkit for designing and evaluating robust controllers in complex experimental settings.
published_date	2025-06-04T05:25:16Z
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score	11.090071

Energy landscape shaping for robust control of atoms in optical lattices

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