HEИндивидуална стипендия2023–2025

STED · Real Space-Time imaging and control of Electron Dynamics

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2023-08-01 → 2025-07-31
Финансиране от ЕС: 181 153 €
Участници: 1
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Движението на електроните в отделни молекули се наблюдава в реално време и пространство, например при прехвърляне на заряд между молекули. Това помага за развитието на технологии в областта на квантовата информация, енергетиката и ултрабързата фотоника.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Real Space-Time imaging and control of Electron Dynamics

The interaction of light and matter plays a fundamental role in many natural processes, such as photosynthesis, vision, and bioluminescence, and has been pivotal in the development of photovoltaics, lasers, and optical communications. At the heart of chemical reactivity lies the ultrafast motion of electrons within molecules, which holds the promise for future technological advances. However, this electronic motion occurs on an extremely fast timescale, femtoseconds, and within spatial scales on the order of picometers. To better understand electron dynamics inside molecules, there is a need for novel experimental tools that offer simultaneous femtosecond temporal and picometer spatial resolutions, enabling direct observation of light-matter interactions at their natural scales. Existing European facilities predominantly use ultrashort light sources that provide spatially averaged information, leaving a gap in local, real-time imaging capabilities. The STED project addresses this gap by focusing on a complementary, so far barely explored approach: to image ultrafast electronic motion in individual molecules in real time but also in real space, with femtosecond and picometer resolutions, respectively, by combining ultrashort laser pulses with a scanning tunneling microscope (STM). The project addresses two key technological challenges: (1) the creation of hybrid light-matter quantum states in strongly coupled molecule-cavity systems, and (2) the detailed investigation of charge transfer processes between individual donor and acceptor molecules. This research program positions the STED project to advance the frontiers of nanoscale quantum science and facilitate the development of transformative technologies in quantum information processing, ultrafast photonics, and energy-efficient nanoscale devices.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The STED project aims at giving an important push to the scientific career of the applicant, in a timely and interdisciplinary topic: imaging the early stages of quantum motion of electrons at their natural space-time scales, i.e., with picometer and attosecond/femtosecond resolutions. The project will take place at IMDEA Nanoscience, a leading multidisciplinary research center dedicated to nanoscience and the development of nanotechnology applications in connection with innovative industries.Electron motion in molecular systems is responsible for natural processes such as photosynthesis, photooxidation, or electronic transport. It is also at the heart of novel technologies based on photovoltaic devices, artificial photosynthesis, molecular wires, etc. Understanding the underlying electron dynamics demands investigating these processes at their natural spatial and temporal scales. In the STED project, I will build a setup where a CW laser and few-femtosecond long laser pulses will be combined with a low-temperature STM. This setup will allow me to image and eventually control electron dynamics occurring in different molecular systems deposited on solid substrates at electronic time scales from hundreds of attoseconds to a few femtoseconds, with simultaneous sub-molecular spatial resolution. I will focus on investigating Rabi oscillations of individual phthalocyanine molecules, and charge-transfer processes between a donor and an acceptor phthalocyanine. The goals are to spectroscopically characterize the induced electron dynamics in real space with the CW laser, and subsequently provide the 'film' of the distribution of the electronic density in real time and real space with the pulsed laser source. This will allow me, e.g., to understand the origin of early sources of decoherences that reduce the efficiency of electronic transport, with possible implications in photovoltaics and quantum information technologies.

Оригинален текст от CORDIS (на английски).

Участници

FUNDACION IMDEA NANOCIENCIA · MadridКоординаторИспания