Description du projet
Des matériaux quantiques pourraient étendre la limite de vitesse de l’électronique au domaine du pétahertz
Les technologies attosecondes, qui nous permettent d’étudier des processus qui se déroulent sur des échelles de temps de l’ordre de 10^-18 secondes, ont révolutionné la façon dont nous étudions l’évolution du monde microscopique en fonction du temps. Dans le domaine de l’informatique, les connaissances acquises par les attosciences pourraient améliorer la vitesse de traitement de l’information de six ordres de grandeur, jusqu’au pétahertz. En raison de leurs propriétés extraordinaires, les matériaux quantiques revêtent une grande importance pour le développement de l’électronique pétahertz. Financé par le programme Actions Marie Skłodowska-Curie, le projet QUMATTO sondera les propriétés électroniques et topologiques des matériaux quantiques jusqu’à l’échelle de l’attoseconde au moyen de champs lumineux intenses. Les résultats du projet pourraient contribuer à stimuler le traitement ultrarapide de l’information dans les matériaux 2D ou les isolants topologiques 3D.
Objectif
The feasibility to sculpt light oscillations on the attosecond (10-18s) timescale has allowed sub-laser-cycle monitoring and control of electron dynamics in gas phase. Attosecond science is now transitioning into the solid state. This route has potential for revolutionary technological impact, improving the speed of information processing by six orders of magnitude, up to the PHz. Yet, standard semiconductors, which have been the focus of most of attosecond studies in solids so far, will always suffer from high energy losses. Quantum materials offer a solution thanks to their unique properties: scatter-free transport (topological insulators), and ability to harness extra electronic degrees of freedom as information carriers (valleytronics). This proposal brings together two fields that have traditionally been apart, attosecond laser technology and quantum materials. Bringing attosecond and strong-field physics into lightwave control of quantum materials, this combined theoretical and experimental project aims to: (i) induce, control and probe electronic and topological properties in quantum materials (2D materials, 3D topological insulators) at few-femtosecond to attosecond timescales via non-resonant, intense tailored light fields, (ii) manipulate and read the electronic valley and spin degrees of freedom at optical (PHz) rates in the non-resonant strong-field regime, i.e. in a way such that the same laser system can be used for a wide range of monolayers and heterostructures. On the one hand, the QUMATTO project has the potential to open new routes for ultra-fast information processing in energy-efficient materials. On the other, it will allow to gain new understanding of quantum properties, e.g. laser-induced topological phase transitions, by studying them at the ultrafast timescales of coherent electron motion.
Champ scientifique
- natural sciencesphysical scienceselectromagnetism and electronicsoptoelectronics
- engineering and technologynanotechnologynano-materialstwo-dimensional nanostructures
- natural sciencesphysical scienceselectromagnetism and electronicssemiconductivity
- natural sciencescomputer and information sciencesdata sciencedata processing
- natural sciencesphysical sciencesopticslaser physics
Programme(s)
Régime de financement
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinateur
12489 Berlin
Allemagne