Projects per year
Organization profile
Organisation profile
We are a group of enthusiastic multidisciplinary young researchers from both the Departments of Applied Physics and Photonics (TONA) and Physics (DNTK). We use experimental and theoretical methods (nonlinear dynamics, stochastic processes, complex systems, electromagnetism, general relativity, etc.) to tackle and answer some fundamental challenges about nonlinear, complex and time-evolving systems. This combination allows an imaginative and insightful approach to problems, thereby avoiding the "fundamental-applied" polarisation. Besides photonic systems (such as e.g. semiconductor lasers) we also study other dynamical (e.g. biological) systems. The current areas of research are: - Dynamics of semiconductor lasers: nonlinear dynamics, bifurcation theory and stochastic processes are used in lasers, in particular semiconductor lasers. This theoretical study allows us to study the dynamic behaviour (e.g. bi- and multi-stability, excitability) of semiconductor lasers. These theoretical predictions are then tested experimentally in our labs. - Coherence properties of lasers: experimental and theoretical study of coherence properties of semiconductor lasers, and research into methods to modify and control the spatial coherence. In this way, we can generate spatially incoherent emission of a laser source. In our research we try to understand, model, optimize and apply this unique emission regime in innovative applications. - Metamaterials: metamaterials are complex structures that are composed of small, resonant electric circuits. These building blocks are much smaller than the wavelength of light, therefore they determine the electromagnetic properties of materials like atoms do in natural materials. Several problems are studied, ranging from the simulation of elementary metamaterial building blocks, over photonic devices based on metamaterials, to the development of metamaterial-based systems using the techniques of transformation optics. - Dissipative solitons: we study structures that arise in extended spatial systems in nature, both patterns as well as localized structures (spatial or dissipative solitons). We investigate the dynamic behaviour of these solitons (in time and space), studying the fundamental principles and unravelling the underlying bifurcation structure. - Coupled networks with delay: we study (small) networks of systems (oscillators) coupled with a time lag (delay). With such systems, synchronization may occur in which the oscillators vibrate with the same frequency and/or phase. In particular, we look at the existence and stability of such synchronized solutions and the influence of network topology and the delay. Such systems also have universal data processing properties (Reservoir Computing or Liquid State Machines) that we investigate and attempt to explain. - Non-linear oscillators with delay: We have recently shown that such systems show universal information processing properties (reservoir computing or Liquid State Machines). With only one non-linear node, we can get the same information-processing performance as with a neural network consisting of 400 nodes. We now further investigate the information processing capacity and attempt to explain and implement information processing concepts based on delay-coupled systems. - Dynamics of biological systems: we are focusing on the dynamics of toxin-antitoxin systems in bacteria and archaea. In cooperation with Structural Biology Brussels, we study models for gene regulation and function in the cell with different techniques: differential equations, stochastic methods, etc. We also study the dynamics of ecoystems, like the human gut flora (together with the Raes lab).
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Network
Profiles
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Jan Danckaert
- Vrije Universiteit Brussel
- Education - Academic
- Physics - Academic
- Applied Physics
- Applied Physics and Photonics - Academic
Person: Researcher, Professor
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Vincent Ginis
- Vrije Universiteit Brussel
- Business technology and Operations - Academic
- Data Analytics Laboratory
- Applied Physics
Person: Researcher, Professor
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Guy Van Der Sande
- Vrije Universiteit Brussel - Unknown
- Basic (bio-) Medical Sciences - Academic
- Applied Physics
- Applied Physics and Photonics - Academic
Person: Unknown, Researcher, Professor
Projects
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DOZ108: Evaluation Digital Semester in times of Corona.
Onderwijs en Studentenzaken, V., Danckaert, J., Van Luchene, S. & De Cock, V.
1/06/20 → 31/05/21
Project: Fundamental
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VLAOO9: Baekeland Mandate: Low power VCSEL arrays for high performance multi-beam LIDAR
Verschaffelt, G. & Verhulst, P.
1/01/19 → 1/01/23
Project: Applied
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IOF3007: IOF GEAR: RAINboW "Responsible AI for a smart connected world”
Nowe, A., Loeckx, J., Dooms, A., Barbé, K., Verbeke, W., Guns, T. & Ginis, V.
21/12/18 → 20/12/21
Project: Applied
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OZR3364: Bilateral cooperation within the framework of a joint doctoral project: benchfee for joint PhD VUB -ULB MON PERE NATHANIEL
14/12/18 → 13/12/22
Project: Fundamental
Research output
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Artificial neural networks for inverse design of resonant nanophotonic components with oscillatory loss landscapes
Lenaerts, J., Pinson, H. & Ginis, V., 1 Jan 2021, In : Nanophotonics. 10, 1, p. 385-392 8 p.Research output: Contribution to journal › Article
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A Compact and Inexpensive Coherent Ising Machine Based on Opto-Electronic Feedback for Solving Combinatorial Optimization Problems
Böhm, F., Verschaffelt, G. & Van Der Sande, G., 10 May 2020, 2020 Conference on Lasers and Electro-Optics (CLEO). IEEE, p. 1-2Research output: Chapter in Book/Report/Conference proceeding › Conference paper › Research
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Deep learning the design of optical components
Lenaerts, J., Pinson, H. & Ginis, V., 2020, (Unpublished).Research output: Unpublished contribution to conference › Unpublished paper
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Demonstrating delay-based reservoir computing using a compact photonic integrated chip
Harkhoe, K. K., Verschaffelt, G., Katumba, A., Bienstman, P. & Van Der Sande, G., 3 Feb 2020, In : Optics Express. 28, 3, p. 3086-3096 11 p.Research output: Contribution to journal › Article
Open AccessFile4 Citations (Scopus)8 Downloads (Pure) -
Generation of arbitrary higher order Poincaré beams from a visible metasurface laser
Sroor, H., Huang, Y. W., Sephton, B., Naidoo, D., Valles, A., Ginis, V., Zhan, Q., Qiu, C. W., Ambrosio, A., Capasso, F. & Forbes, A., 1 Jan 2020, Laser Resonators, Microresonators, and Beam Control XXII. Kudryashov, A. V., Paxton, A. H., Ilchenko, V. S. & Armani, A. M. (eds.). SPIE Press, Vol. 11266. 112660L. (LASER RESONATORS, MICRORESONATORS, AND BEAM CONTROL XXII).Research output: Chapter in Book/Report/Conference proceeding › Conference paper › Research
Activities
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Stochastic logistic models for microbial communities (UCSB)
Sophie de Buyl (Speaker)2020Activity: Talk or presentation › Talk or presentation at a workshop/seminar
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Research Stay at the Kavli Institute of Theoretical Physics, Santa Barbara, USA
Sophie de Buyl (Visitor)2020Activity: Other › Research and Teaching at External Organisation
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Solvay Workshop "Physics of living systems: from molecules, to cells, to whole organisms"
Sophie de Buyl (Organiser)2020Activity: Participating in or organising an event › Participation in conference
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International Journal of Molecular Sciences (Journal)
Sophie de Buyl (Peer reviewer)2019 → …Activity: Publication peer-review and editorial work › Editorial activity
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Frontiers in Microbiology (Journal)
Sophie de Buyl (Editor)2019 → …Activity: Publication peer-review and editorial work › Editorial activity