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.

SG Schirmer, FC Langbein, CA Weidner, EA Jonckheere. Robustness of Quantum Systems Subject to Decoherence: Structured Singular Value Analysis?. IEEE Conf Decision and Control, pp. 4158-4163, 2021. [DOI:10.1109/CDC45484.2021.9682796] [arXiv:2110.05372] [PDF]

Robustness of Quantum Systems Subject to Decoherence: Structured Singular Value ...

1st January 2022 in Quantum / Quantum Control tagged publication

Irtaza Khalid, Carrie Weidner, S.G. Schirmer, Edmond Jonckheere, Frank C. Langbein. Finding and Characterising Robust Quantum Controls. Poster, European Quantum Technologies Conference EQTC, 2021. [PDF:poster] [PDF:abstract]

EQTC2021- Finding and Characterising Robust Quantum Controls

1st December 2021 in Quantum / Quantum Control tagged presentation / publication

I. Khalid, C. A. Weidner, E. A. Jonckheere, S. G. Schirmer, F. C. Langbein. Reinforcement Learning vs. Gradient-Based Optimisation for Robust Energy Landscape Control of Spin-1/2 Quantum Networks. IEEE Conf Decision and Control, pp. 4133-4139, 2021. [DOI:10.1109/CDC45484.2021.9683463] [arXiv:2109.07226] [PDF]

Reinforcement Learning vs. Gradient-Based Optimisation for Robust Energy Landscape Control ...

15th September 2021 in Quantum / Quantum Control tagged publication

Sophie G. Schirmer, Frank C. Langbein, Carrie A. Weidner, Edmond Jonckheere. Robust Control Performance for Open Quantum Systems. IEEE Trans Automatic Control, 67(11):6012-6024, 2022. [DOI:10.1109/TAC.2022.3181249] [arXiv:2008.13691] [PDF]

Robust Control Performance for Open Quantum Systems

31st August 2020 in Quantum / Quantum Control tagged publication

Spin Network Router — FC Langbein, SG Shermer, S O’Neil, E Jonckheere. MatSpinNet. Code, https://qyber.black/spinnet/code-matspinnet, https://github.com/qyber-black/Code-MatSpinNet. [DOI:10.6084/m9.figshare.21856911]

MatSpinNet

16th November 2019 in Spin Dynamics tagged code

E. Jonckheere, S. Schirmer, F. C. Langbein. Effect of Quantum Mechanical Global Phase Factor on Error vs Sensitivity Limitation in Quantum Routing. Accepted, 58th IEEE Conf. Decision and Control (CDC), 2019. [DOI:10.1109/CDC40024.2019.9029913] [PDF]

Effect of Quantum Mechanical Global Phase Factor on Error vs ...

22nd September 2019 in Quantum / Spin Dynamics tagged publication

Regression analysis for the best network architecture — M. Chandler, C. Jenkins, S. M. Shermer, F. C. Langbein. MRSNet: Metabolite Quantification from Edited Magnetic Resonance Spectra With Convolutional Neural Network. Submitted, 2019. [arxiv:1909.03836] [MRSNet]

MRSNet: Metabolite Quantification from Edited Magnetic Resonance Spectra With Convolutional ...

6th September 2019 in MRI/S / Quantum tagged publication

GABA-to-NAA amplitude ratios reported by different tools vs. actual concentration ratio. — C. Jenkins, M. Chandler, F. C. Langbein, S. M. Shermer. Benchmarking GABA Quantification: A Ground Truth Data Set and Comparative Analysis of TARQUIN, LCModel, jMRUI and Gannet. Submitted, 2021. [arxiv:1909.02163] [PDF]

Benchmarking GABA Quantification: A Ground Truth Data Set and Comparative ...

6th September 2019 in MRI/S / Quantum tagged publication

M. Chandler, C. Jenkins, S. M. Shermer, F. C. Langbein. MRSNet, V1.0. Code, https://qyber.black/MRIS/mrsnet, https://github.com/MaxChandler/MRSNet, 16th August 2019. [DOI:10.6084/m9.figshare.9824417.v1]

MRSNet

16th August 2019 in MRI/S / Quantum tagged code

Phantom concentrations — S.M. Shermer, C. Jenkins, M. Chandler, F.C. Langbein. Magnetic resonance spectroscopy data for GABA quantification using MEGAPRESS pulse sequence. Data set, IEEE Data Port, 15th August 2019. [DOI:10.21227/ak1d-3s20] [ZIP]

Magnetic resonance spectroscopy data for GABA quantification using MEGAPRESS pulse ...

15th August 2019 in MRI/S / Quantum tagged data

JE Evans, G Burwell, FC Langbein, SG Shermer, K Kalna. Dilute Magnetic Contact for a Spin GaN HEMT. Semiconductor and Integrated OptoElectronics Conference (SIOE) Conference, Cardiff, 16-18 April, 2019. [PDF]

Dilute Magnetic Contact for a Spin GaN HEMT

22nd April 2019 in Spin Dynamics tagged publication

Christopher Jenkins, Max Chandler, Frank Langbein, Sophie Shermer. Quantification of edited magnetic resonance spectroscopy: a comparative phantom based study of analysis methods. ISMRM 27th Annual Meeting & Exhibition, Montréal, QC, Canada, 11th-16th May 2019. [PDF]

Quantification of edited magnetic resonance spectroscopy: a comparative phantom based ...

20th February 2019 in MRI/S tagged publication