Blog
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 (E) 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...
Il feedback automatizzato può trasformare gli studenti in Prologian felici?
Giving personalized feedback to students is very important to the learning process. Tuttavia, 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...
Progettazione di reti di flusso multi-merce incuranti del traffico
Consideriamo il sottografo del flusso minimo multi-commodity (MMCFS) problema: given a directed graph $G$ with edge capacities $\mathit{berretto}$ and a retention ratio $\alpha\in(0,1)$, trovare un sottografo minimo lungo gli archi $G’ \subseteq G$ such that for all traffic matrices $T$ routable in $G$ using...
Superare il punto di pareggio con la correzione quantistica autonoma degli errori
Correzione dell'errore quantistico (QEC) è essenziale per l’informatica quantistica pratica, 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 in tempo reale, and the use of multiple physical qubits...
Asimmetria materia-antimateria nelle teorie di accoppiamento generalizzato
We explore the gravitational baryogenesis paradigm in the homogeneous and isotropic cosmology of generalized coupling gravity and, in particolare, of the so-called Minimal Exponential Measure Model (MEMe). Lo dimostriamo, also in this theory, the time derivative of the Ricci scalar couples...
QAOA-PCA: Miglioramento dell'efficienza nell'ottimizzazione approssimata quantistica Algoritmo tramite analisi delle componenti principali
L'algoritmo di ottimizzazione approssimata quantistica (QAOA) is a promising variational algorithm for solving combinatorial optimization problems on near-term devices. Tuttavia, as the number of layers in a QAOA circuit increases, che è correlato alla qualità della soluzione, the number of...
Apprendimento continuo incrementale di classi basate su coreset tolleranti al rumore
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...