I am interested in modelling, simulating, learning and controlling quantum systems with applications in quantum technologies, often related to spin dynamics. A particular interesting aspect of this is to learn physical laws of a system to enable to control it. Applications are focused on quantum spin networks, spintronics, magnetic resonance imaging and spectroscopy, and chemical synthesis.
FC Langbein. Control and Machine Learning for Magnetic Resonance Spectroscopy. Keynote talk, Frontiers of Intelligent Computing: Theory and Applications (FICTA), 11-12 April 2023. [Slides]
I Khalid, CA Weider, EA Jonckheere, SG Shermer, FC Langbein. Sample-efficient Model-based Reinforcement Learning for Quantum Control. Phys. Rev. Research 5, 043002, 2023. [DOI:10.1103/PhysRevResearch.5.043002] [arXiv:2304.09718] [PDF]
May 2023 – May 2025: Robust, Trapped Ultracold Atom Interferometry For Six-axis Inertial Sensing. EPSRC EP/Y004728/1. PI: CA Weider. CoI: A Clark, S Schirmer, FC Langbein. £579,418.
SP O’Neil, I Khalid, AA Rompokmos, CA Weidner, FC Langbein, S Schirmer, EA Jonckmheere. Analyzing and Unifying Robustness Measures for Excitation Transfer Control in Spin Networks. IEEE Control Systems Letters, 7:1783-1788, 2023. Also accepted for presentation at the IEEE Conf. Decision and Control (CDC) 2023. [DOI:10.1109/LCSYS.2023.3279797] [arXiv:2303.09518] [PDF]
FC Langbein, SP O’Neil, SG Shermer. Data – Energy Landscape Controllers for XX Spin Rings. Dataset, 2023. [https://qyber.black/spinnet/data-elc-xx-rings] FC Langbein, SP O’Neil, SG Shermer. Results – Energy Landscape Controllers for XX Spin Rings – Robustness. Dataset, 2023. [https://qyber.black/spinnet/results-elc-xx-rings-robustness] SP O’Neil, FC Langbein, SG Shermer. Robustness of Energy Landscape Controllers for […]
S O’Neil, FC Langbein, E Jonckheere, SG Shermer. Robustness of Energy Landscape Control to Dephasing. Research Directions: Quantum Technologies, 1, E13, 2023. [DOI:10.1017/qut.2023.6] [arXiv:2303.05649] [PDF]
S O’Neil, FC Langbein, E Jonckheere, SG Shermer. Robustness of Energy Landscape Controllers for Spin Rings under Coherent Excitation Transport. Research Directions: Quantum Technologies, Volume 1, e12, 2023. [DOI:10.1017/qut.2023.5] [arXiv:2303.00142] [PDF]
S. O’Neil, S.G. Schirmer, F.C. Langbein, C.A. Weidner, E. Jonckheere. Time Domain Sensitivity of the Tracking Error. IEEE Transactions on Automatic Control, 2023. [DOI:10.1109/TAC.2023.3331681] [arXiv:2210.15783] [PDF]
A.A. Rompokos, F.C. Langbein, E.A. Jonckheere. Information Transfer in Spintronics Networks under Worst Case Uncertain Parameter Errors. IEEE Conf Decision and Control, pp. 5825-5830, 2022. [DOI:10.1109/CDC51059.2022.9993088] [PDF:paper]
C.A. Weidner, S.G. Schirmer, F.C. Langbein, E.A. Jonckheere. Applying Classical Control Techniques to Quantum Systems: Entanglement versus Stability Margin and other Limitations. IEEE Conf Decision and Control, pp. 5813-5818, 2022. [DOI:10.1109/CDC51059.2022.9992337] [arXiv:2207.12385] [PDF:paper]
I. Khalid, C. A. Weidner, E. A. Jonckheere, S. G. Shermer, F. C. Langbein. RobChar: Robust Characterisation of Quantum Controls and Control Algorithms. Code, https://github.com/qyber-black/code-robchar, 22nd July 2022. [DOI:10.5281/zenodo.6891152] [Project]