Project description
Research probes the ability of electrons to transfer optical coherence
Coherent interactions between light and electrons enable structuring the temporal probability distribution of electrons with attosecond precision. However, research so far has focused on electron-photon interactions mediated by solid-state structures. The EU-funded eWaveShaper project will develop a versatile tool for shaping electron pulses and characterising the phase profile and amplitude of the electron wave function. Light-electron interactions will be mediated by spatially and temporally modulated light fields in a vacuum. The electron wave packets will be controlled on the nanometre spatial and sub-femtosecond time scales. The approaches proposed in eWaveShaper will open up the possibility for optical coherence transfer mediated by free electrons and spectroscopy with atomic spatial resolution.
Objective
Advanced techniques of electron microscopy and spectroscopy require tools, which enable to control various degrees of freedom of electron beams (phase profile, temporal structure, orbital angular momentum, etc.). The inelastic quantum coherent interaction between light waves and electron wavepackets allows to structure the temporal probability distribution of electrons with attosecond precision, which may enable probing the coherent dynamics of optical excitations or plasmonic near-fields of nanostructures and metamaterials. Up to now, only electron-photon interactions mediated by solid-state structures have been considered, which have severe limitations. In this project I will develop a versatile tool for quantum coherent shaping and full characterisation of the phase profile and amplitude of the electron wave function in electron microscopes. The interaction will be mediated by the ponderomotive potential of spatio-temporally shaped light fields in vacuum. The electron wavepackets will be controlled on nanometer spatial and sub-femtosecond time scales that are natural for light waves. The optical coherence imprinted to the electron wavepackets will be exploited in two ways: i) I will explore the possibility to transfer the temporal coherence from density-modulated electron wavepackets to radiation and bound electron excitations in two-level quantum systems by detecting phase-resolved cathodoluminescence and coherent Smith-Purcell radiation driven by swift electrons. ii) I will introduce time-domain electron holography, which will exploit the temporal coherence of shaped electron wavepackets for phase-resolved imaging of optical excitations in nanostructures. The approaches proposed in this project open new pathways for electron-mediated optical quantum-coherent control and spectroscopy with atomic spatial resolution.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences optics microscopy
- natural sciences physical sciences optics spectroscopy
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2021-STG
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
116 36 Praha 1
Czechia
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.