146 citations · 808 across the 16 of their papers we have counts for
16 papers
A Quantum Optical Recurrent Neural Network for Online Processing of Quantum Times Series
Robbe De Prins, Guy Van der Sande, Peter Bienstman
Over the last decade, researchers have studied the synergy between quantum computing (QC) and classical machine learning (ML) algorithms. However, measurements in QC often disturb…
Noise-injected analog Ising machines enable ultrafast statistical sampling and machine learning
Fabian Böhm, Diego Alonso-Urquijo, Guy Verschaffelt +1
Ising machines are a promising non-von-Neumann computational concept for neural network training and combinatorial optimization. However, while various neural networks can be imple…
Order-of-magnitude differences in computational performance of analog Ising machines induced by the choice of nonlinearity
Fabian Böhm, Thomas Van Vaerenbergh, Guy Verschaffelt +1
Ising machines based on nonlinear analog systems are a promising method to accelerate computation of NP-hard optimization problems. Yet, their analog nature is also causing amplitu…
Distributed Kerr Nonlinearity in a Coherent All-Optical Fiber-Ring Reservoir Computer
Jaël Pauwels, Guy Verschaffelt, Serge Massar +1
We investigate, both numerically and experimentally, the usefulness of a distributed nonlinearity in a passive coherent photonic reservoir computer. This computing system is based…
Demonstrating Delay-based Reservoir Computing Using a Compact Photonic Integrated Chip
Krishan Harkhoe, Guy Verschaffelt, Andrew Katumba +2
Photonic delay-based reservoir computing (RC) has gained considerable attention lately, as it allows for simple technological implementations of the RC concept that can operate at…
Semiconductor Ring Lasers Coupled by a Single Waveguide
W. Coomans, L. Gelens, G. Van der Sande +4
We experimentally and theoretically study the characteristics of semiconductor ring lasers bidirectionally coupled by a single bus waveguide. This configuration has, e.g., been sug…
Solitary and Coupled Semiconductor Ring Lasers as Optical Spiking Neurons
Werner Coomans, Lendert Gelens, Stefano Beri +2
We theoretically investigate the possibility of generating pulses in an excitable (asymmetric) semiconductor ring laser (SRL) using optical trigger pulses. We show that the phase d…
Excitability in optical systems close to Z2-symmetry
Stefano Beri, Lilia Mashall, Lendert Gelens +5
We report theoretically and experimentally on excitability in semiconductor ring lasers in order to reveal a mechanism of excitability, general for systems close to Z2-symmetry. Th…
Excitability in semiconductor microring lasers: Experimental and theoretical pulse characterization
L. Gelens, L. Mashal, S. Beri +4
We characterize the operation of semiconductor microring lasers in an excitable regime. Our experiments reveal a statistical distribution of the characteristics of noise-triggered…
Optical injection in semiconductor ring lasers
W. Coomans, S. Beri, G. Van der Sande +2
We theoretically investigate optical injection in semiconductor ring lasers and disclose several dynamical regimes. Through numerical simulations and bifurcation continuation, two…
Nonlocality-induced front interaction enhancement
Lendert Gelens, Damia Gomila, Guy Van der Sande +2
We demonstrate that nonlocal coupling strongly influences the dynamics of fronts connecting two equivalent states. In two prototype models we observe a large amplification in the i…
Negative diffraction pattern dynamics in nonlinear cavities with left-handed materials
Pascal Kockaert, Philippe Tassin, Guy Van der Sande +2
We study a ring cavity filled with a slab of a right-handed material and a slab of a left-handed material. Both layers are assumed to be nonlinear Kerr media. First, we derive a mo…
Impact of nonlocal interactions in dissipative systems: towards minimal-sized localized structures
L. Gelens, G. Van der Sande, P. Tassin +5
In order to investigate the size limit on spatial localized structures in a nonlinear system, we explore the impact of linear nonlocality on their domains of existence and stabilit…
Topological insight into the non-Arrhenius mode hopping of semiconductor ring lasers
S. Beri, L. Gelens, M. Mestre +6
We investigate both theoretically and experimentally the stochastic switching between two counter-propagating lasing modes of a semiconductor ring laser. Experimentally, the reside…
A phase-space approach to directional switching in semiconductor ring lasers
L. Gelens, G. Van der Sande, S. Beri +1
We show that a topological investigation of the phase space of a Semiconductor Ring Laser can be used to devise switching schemes which are alternative to optical pulse injection o…
Exploring multi-stability in semiconductor ring lasers: theory and experiment
L. Gelens, S. Beri, G. Van der Sande +4
We report the first experimental observation of multi-stable states in a single-longitudinal mode semiconductor ring laser. We show how the operation of the device can be steered t…