Quantum

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.

ft-img — 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]

The ubiquitous problem of learning system parameters for dissipative two-level ...

4th November 2014 in Learning & Identification tagged publication

spin-sysid — 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]

Characterization and Control of Quantum Spin Chains and Rings

4th November 2014 in Learning & Identification / Quantum Control / Spin Dynamics tagged publication

mtp — 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]

Quantum networks: Anti-core of spin chains

4th November 2014 in Spin Dynamics tagged publication

EMF MRI — August 2014 - August 2015: Cardiff University Research Leave Fellowship for Frank C Langbein. Teaching replacement costs and £3,000 support.

Cardiff University Research Leave Fellowship

1st August 2014 in Learning & Identification / Quantum / Quantum Control / Spin Dynamics tagged funding

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.

Closed loop optimisation for sustainable chemical manufacture

1st October 2013 in Chemical Synthesis tagged funding

spinnet_dist — 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]

Curvature of quantum rings

4th November 2012 in Spin Dynamics tagged publication

QUAINT: Optimal Control Technologies in Quantum Information Processing

1st August 2012 in Learning & Identification / Quantum Control / Spin Dynamics tagged funding

clusters — 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]

Geometry and Curvature of Spin Networks

4th November 2011 in Spin Dynamics tagged publication

goldrush — 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]

Quantum Engineering: From Einstein’s Spooky Action to Sustainable Technology?

15th September 2010 in Quantum tagged engagement / publication

isccsp09b — 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]

Quantum System Identification: Hamiltonian Estimation using Spectral and Bayesian Analysis

3rd March 2010 in Learning & Identification tagged publication

2009-2013: RIVIC: One Wales Research Institute for Visual Computing. WAG (HEFCW) via Bangor University. Consortium: R. R. Martin, N. J. Avis, A. D. Marshall, P. L. Rosin, F. C. Langbein at Cardiff University, with Bangor University (lead), Aberystwyth University, Swansea University. £998,011.