Christian Offen, PhD, Massey University, New Zealand

Numerical Mathematics and Control

Former

Office Address:
Technologiepark 21
33100 Paderborn
Room:
TP21.1.14

About Christian Offen

Curriculum Vitae

01.08.2025: Assistant Professor (Research and Teaching, tenure-track)

University of Birmingham, School of Mathematics, Edgbaston, Birmingham, UK
Profile page - University of Birmingham 

01.05.2025 - 31.07.2025: Postdoctoral Researcher

Paderborn University, Department of Mathematics. Group Numerical Mathematics and Control (Prof. Sina Ober-Blöbaum).

15.08.2022 - 30.04.2024: Senior Researcher

Paderborn University, Institute of Mathematics, project "Photonic Quantum Computing", Ministry of Culture and Science of the State of North Rhine-Westphalia, group Numerical Mathematics and Control (Prof. Sina Ober-Blöbaum)

24.08.2020 - 14.08.2022: Postdoctoral Researcher

Paderborn University, Department of Mathematics. Group Numerical Mathematics and Control (Prof. Sina Ober-Blöbaum).

04.11.2016 - 23.09.2020: PhD in Mathematics

Massey University, New Zealand. Thesis: Analysis of Hamiltonian boundary value problems and symplectic integration, advisor: Dist. Prof. Robert McLachlan. (2019 - Hatherton Award,   2020 - Dean's List of Exceptional Theses)

10/2014 - 09/2016: Master of Science Mathematics

University of Hamburg, Master studies. Thesis: Seiberg-Witten Curves and Parabolic Affine Spheres (Differential Geometry), advisor: Prof. Dr. Vicente Cortés

10/2011 - 09/2014: Bachelor of Science Mathematics

University of Hamburg, Bachelor studies. Thesis: Classification of solutions of the Monge-Ampère equation in the finitely punctured plane (Differential Geometry), advisor: Prof. Dr. Vicente Cortés

21.08.2020: Thesis Award

Honour of inclusion of my doctoral thesis in the Dean’s List of Exceptional Doctoral Theses as the only thesis in the subject of Mathematics in 2020.

17.10.2019: Hatherton Award 2019

Best scientific paper by a PhD student at any New Zealand university in chemical sciences, physical sciences, mathematical and information sciences - Royal Society of New Zealand (Hatherton Award 2019)

06.12.2017: Aitken Prize (Honorary mention)

Honorary mention in the Aitken Prize of the New Zealand Mathematical Society for the talk "Bifurcations of solutions to Hamiltonian boundary value problems"

01.05.2014: German Academic Scholarship Foundation

Award of a scholarship by the German Academic Scholarship Foundation (Studienstiftung des deutschen Volkes)

17.05.2011: Award by the German Mathematical Society (Abiturpreis)

Award for outstanding highschool graduates by the German Mathematical Society

Research

Research Interests

  • Structure-preserving numerical integration
  • Data-driven models for dynamical systems (especially Hamiltonian/Lagrangian systems)
  • Kernel-based methods
  • Multi-symplectic integration
  • Lie group methods
  • Bifurcation theory

Publications

Latest Publications

Multiphoton, multimode state classification for nonlinear optical circuits

D. Kopylov, C. Offen, L. Ares, B.E. Wembe Moafo, S. Ober-Blöbaum, T. Meier, P. Sharapova, J. Sperling, (n.d.).



Adaptive higher order reversible integrators for memory efficient deep learning

S. Maslovskaya, S. Ober-Blöbaum, C. Offen, P. Singh, B.E. Wembe Moafo, (2025).


Multiphoton, multimode state classification for nonlinear optical circuits

D.A. Kopylov, C. Offen, L. Ares, B.E. Wembe Moafo, S. Ober-Blöbaum, T. Meier, P.R. Sharapova, J. Sperling, Physical Review Research 7 (2025).


Multiphoton, multimode state classification for nonlinear optical circuits

T. Meier, P.R. Sharapova, J. Sperling, S. Ober-Blöbaum, B.E. Wembe Moafo, C. Offen, (2025).


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