Energy landscape shaping for robust control of atoms in optical lattices
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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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/addc0d |
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| _version_ | 1850123137956446208 |
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| author | C A Weidner S P O’Neil E A Jonckheere F C Langbein S G Schirmer |
| author_facet | C A Weidner S P O’Neil E A Jonckheere F C Langbein S G Schirmer |
| author_sort | C A Weidner |
| collection | DOAJ |
| 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. |
| format | Article |
| id | doaj-art-2ec708e481e7481e83c7bf617d8fd62a |
| institution | OA Journals |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-2ec708e481e7481e83c7bf617d8fd62a2025-08-20T02:34:40ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127606450310.1088/1367-2630/addc0dEnergy landscape shaping for robust control of atoms in optical latticesC A Weidner0https://orcid.org/0000-0001-7776-9836S P O’Neil1https://orcid.org/0000-0001-6669-4947E A Jonckheere2https://orcid.org/0000-0002-7205-4273F C Langbein3https://orcid.org/0000-0002-3379-0323S G Schirmer4https://orcid.org/0000-0002-5530-7750Quantum Engineering Technology Laboratories, H. H. Wills Physics Laboratory and Department of Electrical and Electronic Engineering, University of Bristol , Bristol BS8 1FD, United KingdomDepartment of Electrical Engineering and Computer Science, United States Military Academy , West Point, NY 10996, United States of AmericaDepartment of Electrical and Computer Engineering, University of Southern California , Los Angeles, CA 90007, United States of AmericaSchool of Computer Science and Informatics, Cardiff University , Cardiff CF24 4AG, United KingdomFaculty of Science & Engineering, Physics, Swansea University , Swansea SA2 8PP, United KingdomRobust 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.https://doi.org/10.1088/1367-2630/addc0dcold atomsoptical latticesquantum controlenergy landscape |
| spellingShingle | C A Weidner S P O’Neil E A Jonckheere F C Langbein S G Schirmer Energy landscape shaping for robust control of atoms in optical lattices New Journal of Physics cold atoms optical lattices quantum control energy landscape |
| title | 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_short | Energy landscape shaping for robust control of atoms in optical lattices |
| title_sort | energy landscape shaping for robust control of atoms in optical lattices |
| topic | cold atoms optical lattices quantum control energy landscape |
| url | https://doi.org/10.1088/1367-2630/addc0d |
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