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Giovanni Maria Vanacore

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Related publications (23)

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Spatio-temporal shaping of a free-electron wave function via coherent light-electron interaction

Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore

The past decade has witnessed a quantum revolution in the field of computation, communication and materials investigation. A similar revolution is also occurring for free-electron based techniques, where the classical treatment of a free electron as a poin ...

SPRINGERNATURE2020

Ultrafast Electron Microscopy of Nanoscale Charge Dynamics in Semiconductors

Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore, Simone Gargiulo, Francesco Barantani

The ultrafast dynamics of charge carriers in solids plays a pivotal role in emerging optoelectronics, photonics, energy harvesting, and quantum technology applications. However, the investigation and direct visualization of such nonequilibrium phenomena re ...

AMER CHEMICAL SOC2023

Charge Dynamics Electron Microscopy Nanoscale Imaging of Femtosecond Plasma Dynamics

Fabrizio Carbone, Tom Theodorus Antonius Lummen, Thomas La Grange, Ivan Madan, Giovanni Maria Vanacore, Gabriele Berruto, Simone Gargiulo, Francesco Barantani, Luca Piazza

Understanding and actively controlling the spatiotemporal dynamics of nonequilibrium electron clouds is fundamental for the design of light and electron sources, high power electronic devices, and plasma-based applications. However, electron clouds evolve ...

AMER CHEMICAL SOC2023

Ultrafast generation and control of an electron vortex beam via chiral plasmonic near fields

Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore, Enrico Pomarico, Gabriele Berruto, Brett Eugene Barwick

Vortex-carrying matter waves, such as chiral electron beams, are of significant interest in both applied and fundamental science. Continuous-wave electron vortex beams are commonly prepared via passive phase masks imprinting a transverse phase modulation o ...

2019

Holographic imaging of electromagnetic fields via electron-light quantum interference

Fabrizio Carbone, Tom Theodorus Antonius Lummen, Ivan Madan, Giovanni Maria Vanacore, Enrico Pomarico, Gabriele Berruto, Tatiana Latychevskaia

Holography relies on the interference between a known reference and a signal of interest to reconstruct both the amplitude and the phase of that signal. With electrons, the extension of holography to the ultrafast time domain remains a challenge, although ...

American Association for the Advancement of Science (AAAS)2019

Attosecond coherent control of free-electron wave functions using semi-infinite light fields

Fabrizio Carbone, Ivan Madan, Enrico Pomarico, Giovanni Maria Vanacore, Gabriele Berruto, Brett Eugene Barwick

Light–electron interaction is the seminal ingredient in free-electron lasers and dynamical investigation of matter. Pushing the coherent control of electrons by light to the attosecond timescale and below would enable unprecedented applications in quantum ...

Nature Research2018

Longitudinal and transverse modulation of electron wave function with light, and its application to electron microscopy

Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore, Enrico Pomarico, Gabriele Berruto

Conventional electron microscopy operates with flat electron wave fronts. Employing attenuative or electrostatic phase plates allows transversally modulating the wave front, enhancing cross-sections of particular scattering channels. Utilization of light f ...

IEEE2021

Design and implementation of an optimal laser pulse front tilting scheme for ultrafast electron diffraction in reflection geometry with high temporal resolution

Rajeswari Jayaraman, Fabrizio Carbone, Giovanni Maria Vanacore, Giulia Fulvia Mancini, Malte Oppermann, Francesco Pennacchio

Ultrafast electron diffraction is a powerful technique to investigate out-of-equilibrium atomic dynamics in solids with high temporal resolution. When diffraction is performed in reflection geometry, the main limitation is the mismatch in group velocity be ...

Amer Inst Physics2017

One-Dimensional "Ghost Imaging" in Electron Microscopy of Inelastically Scattered Electrons

Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore, Simone Gargiulo

Entanglement and correlation are at the basis of quantummechanicsand have been used in optics to create a framework for "ghostimaging". We propose that a similar scheme can be used in anelectron microscope to exploit the correlation of electrons with theco ...

2023

Ultrafast Transverse Modulation of Free Electrons by Interaction with Shaped Optical Fields

Phoebe Marie Tengdin, Fabrizio Carbone, Thomas La Grange, Ivan Madan, Giovanni Maria Vanacore, Simone Gargiulo, Francesco Barantani, Alexey Sapozhnik, Veronica Leccese

Spatiotemporal electron-beam shaping is a bold frontier of electron microscopy. Over the past decade, shaping methods evolved from static phase plates to low-speed electrostatic and magnetostatic displays. Recently, a swift change of paradigm utilizing lig ...

AMER CHEMICAL SOC2022

The quantum future of microscopy: Wave function engineering of electrons, ions, and nuclei

Fabrizio Carbone, Thomas La Grange, Ivan Madan, Giovanni Maria Vanacore, Simone Gargiulo

The ability to manipulate particles has always been a fundamental aspect for developing and improving scattering and microscopytechniques used for material investigations. So far, microscopy applications have mostly relied on a classical treatment of the e ...

AIP American Institute of Physics2020

Ultrafast atomic-scale visualization of acoustic phonons generated by optically excited quantum dots

Fabrizio Carbone, Giovanni Maria Vanacore

Understanding the dynamics of atomic vibrations confined in quasi-zero dimen- sional systems is crucial from both a fundamental point-of-view and a technologi- cal perspective. Using ultrafast electron diffraction, we monitored the lattice dynamics of GaAs ...

2017

meV Resolution in Laser-Assisted Energy-Filtered Transmission Electron Microscopy

Fabrizio Carbone, Giovanni Maria Vanacore, Ivan Madan, Enrico Pomarico, Gabriele Berruto

The electronic, optical, and magnetic properties of quantum solids are determined by their low-energy (

2018

Rippling ultrafast dynamics of suspended 2D monolayers, graphene

Nicola Marzari, Giovanni Maria Vanacore, Andrea Cepellotti

Here, using ultrafast electron crystallography (UEC), we report the observation of rippling dynamics in suspended monolayer graphene, the prototypical and most-studied 2D material. The high scattering cross-section for electron/matter interaction, the atom ...

National Academy of Sciences2016

Four-dimensional electron microscopy: Ultrafast imaging, diffraction and spectroscopy in materials science and biology

Giovanni Maria Vanacore

Understanding the ultrafast evolution of atomic and electronic rearrangements under nonequilibrium conditions in organic, inorganic and biological materials plays a fundamental role in deciphering the mechanism governing chemical and biological functions. ...

Elsevier Sci Ltd2016

Charge Dynamics Electron Microscopy

Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore, Gabriele Berruto, Simone Gargiulo, Francesco Barantani

We probe plasma dynamics with nm-fs resolution through electron spectroscopy performed in an ultrafast transmission electron microscope. This approach would allow to disentangle the dynamic evolution of plasma parameters and observe previously inaccessible ...

IEEE2021

Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscope

Henrik Moodysson Rønnow, Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore, Enrico Pomarico, Gabriele Berruto, Ping Huang, Yoshie Murooka

We demonstrate that light-induced heat pulses of different duration and energy can write Skyrmions in a broad range of temperatures and magnetic field in FeGe. Using a combination of camera-rate and pump- probe cryo-Lorentz transmission electron microscopy ...

2018

Generation and control of localized terahertz fields in photoemitted electron plasmas

Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore, Simone Gargiulo, Francesco Barantani

Dense micron-sized electron plasmas, such as those generated upon irradiation of nanostructured metallic surfaces by intense femtosecond laser pulses, constitute a rich playground to study light-matter interactions, many-body phenomena, and out-of-equilibr ...

ROYAL SOC CHEMISTRY2023

Revisiting the Excitation of the Low-Lying ^{181m}Ta Isomer in Optical Laser-Generated Plasma

Fabrizio Carbone, Ivan Madan, Giovanni Maria Vanacore, Simone Gargiulo, Veronica Leccese, Benoît Guilhem Michel Binh Truc, Kjeld Adrianus Antonius Gerardus Beeks, Paolo Usai

The excitation of the ^{181m}Ta isomer in the laser-plasma scenario was claimed to have been observed more than two decades ago. However, the reported experimental findings-and the respective high excitation rate-were later questioned as they could not be ...

2024

Ultrafast generation of hidden phases via energy-tuned electronic photoexcitation in magnetite

Fabrizio Carbone, Thomas La Grange, Ivan Madan, Giovanni Maria Vanacore, Gabriele Berruto, Francesco Pennacchio, Benoît Guilhem Michel Binh Truc, Paolo Usai, Siham Benhabib

Phase transitions occurring in nonequilibrium conditions can evolve through high-energy intermediate states inaccessible via equilibrium adiabatic conditions. Because of the subtle nature of such hidden phases, their direct observation is extremely challen ...

National Academy of Sciences2024