H2020Индивидуална стипендия2021–2023

SSFI · Spin-resolved strong field ionisation

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2021-09-01 → 2023-08-31
Финансиране от ЕС: 207 312 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Спинът и орбиталният момент на електроните се анализират при йонизация на атоми и молекули в силни полета. Това помага за по-точното изобразяване на химичните реакции чрез създаване на „молекулярни филми“ с изключително висока скорост.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Spin-resolved strong field ionisation

Problem being addressed: Molecular movies depicting chemical reactions via attosecond (10^-18 s) snapshots, which vastly improve our understanding of molecular dynamics, is within our grasp. Strong-field imaging techniques under development, such as photoelectron holography, promise just this. However, up until very recently, all strong-field theoretical models have neglected spin, spin-orbit coupling and orbital angular momentum (OAM). Initial work including spin in the initial state, along with recent experiments, has shown that spin in strong-field processes is vitally important, leading to different ionization probabilities which in turn may alter the all important electron dynamics. Furthermore, recent work has demonstrated that the OAM of the photoelectron may be measured, providing yet another degree of freedom for exploration that is intimately connected to spin. Impact for society: This will enable the role of spin to be fully understood in SFP and thus fully fledged imaging protocols can be explored where the additional observable, spin, is fully accounted for and exploited. In NSDI the combination of quantum interference, high momentum and spin correlation (possibly even entanglement) will lead to a wealth of applications in imaging and beyond, if these properties can be understood. Overall objectives: I will utilise and develop cutting edge theoretical frameworks to fully include electron spin, orbital angular momentum and spin-orbit coupling for strong-field processes in atoms and molecules. I will develop a semi-analytic model, which fully includes spin and spin-orbit coupling. This is motivated by the long history of semi-analytic methods that have been developed in this field, which have enabled unprecedented access into the electron dynamics for strong-field processes. As such, developing a model for spin will reveal deep new physical insight. A proper treatment allows more advanced and robust imaging techniques. I will explore the use of spin to enhance existing imaging processes, such as photoelectron holography. Furthermore, I will develop the semi-analytic model for two electrons and explore spin entanglement and correlation with momentum in two-electron ionisation processes, to design entirely new imaging procedures. This analysis will also open up the possibility of exploiting this system for quantum information purposes.

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

Цел на проекта

Molecular movies depicting chemical reactions via attosecond (10^-18 s) snapshots, which vastly improve our understanding of molecular dynamics is within our grasp. Strong-field imaging techniques under development, such as photoelectron holography, promise just this. However, up until very recently all strong-field theoretical models have neglected spin and spin-orbit coupling. Initial work including spin in the initial state, along with recent experiments, has shown that spin in strong-field processes is vitally important, leading to different ionisation probabilities which in turn may alter the all important electron dynamics. In this project, I will utilise and develop cutting edge theoretical frameworks to fully include electron spin for strong-field processes in atoms and molecules. I will develop a semi-analytic model, which fully includes spin and spin-orbit coupling for single active electron and two active electron cases. This is motivated by the long history of semi-analytic methods that have been developed in this field, which have enabled unprecedented access into the electron dynamics for strong-field processes. As such, developing a model for spin will reveal deep new physical insight. I will validate the methodology by exploiting my supervisors expertise and contacts, collaborating with theorists employing complementary cutting-edge numerical models and with the only group of experimentalists to have performed spin measurements on strong-field processes. A proper treatment will allow more advanced and robust imaging techniques. I will explore the use of spin to enhance existing imaging processes such as photoelectron holography. Furthermore, I will develop the semi-analytic model for two electrons and explore spin entanglement and correlation with momentum in two-electron ionisation processes, to design entirely new imaging procedures. This analysis will also open up the possibility of exploiting this system for quantum information purposes.

Оригинален текст от CORDIS (на английски).

Участници

AARHUS UNIVERSITET · Aarhus CКоординаторДания