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.
F. C. Langbein. Optimal Control of Chemical Reactions with Data-Driven Models. Presentation at the Closed Loop Optimisation of Synthesis meeting at GSK, 16 April 2015, Stevenage, United Kingdom. [PDF]
January 2015 - December 2017: Data-Driven Simulation of Quantum Spin Network Devices. PI: F. C. Langbein with S. G. Schirmer, K. Kalna, A. Martinez, D. Burgarth.
Sophie Schirmer, Frank Langbein. The ubiquitous problem of learning system parameters for dissipative two-level quantum systems: Fourier analysis versus Bayesian estimation. Phys Rev A, 91:022125, 2015. [DOI:10.1103/PhysRevA.91.022125] [arXiv:1412.4282] [PDF]
S. G. Schirmer, F. C. Langbein. Characterization and Control of Quantum Spin Chains and Rings. In: Proc. 6th Int Symp Communications, Control and Signal Processing (ISCCSP), pp. 615 – 619, May 2014. [DOI:10.1109/ISCCSP.2014.6877950] [arXiv:1403.0226] [PDF]
E. Jonckheere, F. C. Langbein, S. Schirmer. Quantum networks: Anti-core of spin chains. Quantum Information Processing. 13(7):1607-1637, 2014. [DOI:10.1007/s11128-014-0755-5] [arXiv:1403.0159] [PDF]
October 2013 – March 2016: Closed loop optimisation for sustainable chemical manufacture. EPSRC EP/L003309/1. PI: RJ Whitby, CoI: D Woods, FC Langbein, A Nordon, A Lapkin. Industrial partners: Cyclofluidic Ltd, GlaxoSmithKline, Syngenta. £973,523.
E. Jonckheere, F. C. Langbein, S. G. Schirmer. Curvature of quantum rings. In: Proc. 5th Int Symp Communications Control and Signal Processing (ISCCSP), pp. 1-6, 2012. [DOI:10.1109/ISCCSP.2012.6217863] [arXiv:1202.2556] [PDF]
E Jonckheere, S G Schirmer, F C Langbein. Geometry and Curvature of Spin Networks. IEEE International Conference on Control Applicatons, pp. 786-791, 2011. [DOI:10.1109/CCA.2011.6044395] [arXiv:1102.3208] [PDF]
F. C. Langbein, S. G. Schirmer. Quantum Engineering: From Einstein’s Spooky Action to Sustainable Technology? In: IEEE GOLDRush newsletter, peer-reviewed contribution, pp. 14-15, September 2010. [DOI:10.13140/RG.2.1.4109.1921] [Published] [PDF]
S. G. Schirmer, F. C. Langbein. Quantum System Identification: Hamiltonian Estimation using Spectral and Bayesian Analysis. In: Proc. 4th Int. Symp. Communications, Control and Signal Processing, Limassol, Cyprus, 3-5 March 2010, pp. 1-5, ISCCSP 2010. [DOI:10.1109/ISCCSP.2010.5463437] [arXiv:0911.5429] [PDF]