Blogue
300 μs optical cavity storage time and $\mathbf{10^{-7}}$ active RAM cancellation for $\mathbf{10^{-19}}$ laser frequency stabilisation
Frequency stabilisation of lasers to optical reference cavities is an established method to achieve state-of-the-art stability. The strengths of this method are the high discriminator coefficient of optical cavities, and the low-noise extraction of the stabilisation signal using modulation techniques. In this...
Identification of quasars variable over long time scales from infrared surveys. Ensemble variability and structure function properties
Quasars are variable and their variability can both constrain their physical properties and help to identify them. We look for ways to efficiently identify quasars exhibiting consistent variability over multi-year time-scales, based on a small number of epochs. Using infrared (ET) is...
DYNUS: Uncertainty-aware Trajectory Planner in Dynamic Unknown Environments
This paper introduces DYNUS, an uncertainty-aware trajectory planner designed for dynamic unknown environments. Operating in such settings presents many challenges — most notably, because the agent cannot predict the ground-truth future paths of obstacles, a previously planned trajectory can become unsafe at...
Search Timelines: Visualizing Search History to Enable Cross-Session Exploratory Search
Purpose: The timespan over which exploratory searching can occur, as well as the scope and volume of the search activities undertaken, can make it difficult for searchers to remember key details about their search activities. These difficulties are present both in the...
Les commentaires automatisés peuvent-ils transformer les étudiants en prologues heureux?
Giving personalized feedback to students is very important to the learning process. Cependant, doing so in a timely manner can be difficult to accomplish in very large courses. Recent work has explored different types of automated feedback adapted to different languages and...
Conception de réseau de flux multi-produits sans souci du trafic
Nous considérons le sous-graphe minimum de flux multi-produits (MMCFS) problème: given a directed graph $G$ with edge capacities $\mathit{capuchon}$ and a retention ratio $\alpha\in(0,1)$, trouver un sous-graphe minimum par bord $G’ \subseteq G$ such that for all traffic matrices $T$ routable in $G$ using...
Battre le seuil de rentabilité grâce à la correction autonome des erreurs quantiques
Correction d'erreur quantique (QEC) est essentiel pour l’informatique quantique pratique, as it protects fragile quantum information from errors by encoding it in high-dimensional Hilbert spaces. Conventional QEC protocols typically require repeated syndrome measurements, feedback en temps réel, and the use of multiple physical qubits...
Asymétrie matière-antimatière dans les théories de couplage généralisées
We explore the gravitational baryogenesis paradigm in the homogeneous and isotropic cosmology of generalized coupling gravity and, en particulier, of the so-called Minimal Exponential Measure Model (MEMe). Nous montrons que, also in this theory, the time derivative of the Ricci scalar couples...
QAOA-PCA: Améliorer l'efficacité de l'optimisation approximative quantique Algorithme via l'analyse en composantes principales
L'algorithme d'optimisation approximative quantique (QAOA) is a promising variational algorithm for solving combinatorial optimization problems on near-term devices. Cependant, as the number of layers in a QAOA circuit increases, ce qui est corrélé à la qualité de la solution, the number of...
Apprentissage continu incrémental basé sur un coreset tolérant au bruit
Many applications of computer vision require the ability to adapt to novel data distributions after deployment. Adaptation requires algorithms capable of continual learning (CL). Continual learners must be plastic to adapt to novel tasks while minimizing forgetting of previous tasks.However, CL opens...