Zobrazeno 1 - 10
of 156
pro vyhledávání: '"Galán, Álvaro"'
Autor:
van Essen, Pieter J., de Keijzer, Brian, van Horen, Tanya, Molinero, Eduardo B., Galán, Álvaro Jiménez, Silva, Rui E. F., Kraus, Peter M.
High-harmonic generation from solids can be utilized as probe of ultrafast dynamics, but thus far only over extended sample areas, since its spatial resolution is diffraction-limited. Here we propose spatial polarization gating, that is using a spati
Externí odkaz:
http://arxiv.org/abs/2409.02535
Autor:
Faeyrman, Lior, Molinero, Eduardo B., Weiss, Roni, Narovlansky, Vladimir, Kneller, Omer, Arusi-Parpar, Talya, Bruner, Barry D., Yan, Binghai, Ivanov, Misha, Smirnova, Olga, Jimenez-Galan, Alvaro, Piccoli, Riccardo, Silva, Rui E. F., Dudovich, Nirit, Uzan-Narovlansky, Ayelet J.
In quantum mechanics, a quantum wavepacket may acquire a geometrical phase as it evolves along a cyclic trajectory in parameter space. In condensed matter systems, the Berry phase plays a crucial role in fundamental phenomena such as the Hall effect,
Externí odkaz:
http://arxiv.org/abs/2408.03105
Using real-space view of high harmonic generation (HHG) in solids, we develop a physically transparent and gauge-invariant approach for distinguishing intraband and interband HHG mechanisms. Our approach relies on resolving the harmonic emission acco
Externí odkaz:
http://arxiv.org/abs/2310.17007
Using a fully real-space perspective on high harmonic generation (HHG) in solids, we examine the relationship between microscopic response, macroscopic propagation of this response to the far field, and the extremely short dephasing times routinely u
Externí odkaz:
http://arxiv.org/abs/2310.17005
Autor:
Uzan-Narovlansky, Ayelet J., Jiménez-Galán, Álvaro, Orenstein, Gal, Silva, Rui E. F., Arusi-Parpar, Talya, Shames, Sergei, Bruner, Barry D., Yan, Binghai, Smirnova, Olga, Ivanov, Misha, Dudovich, Nirit
Publikováno v:
Nature Photonics 16 428-432 (2022)
Intense light-matter interactions have revolutionized our ability to probe and manipulate quantum systems at sub-femtosecond time scales, opening routes to all-optical control of electronic currents in solids at petahertz rates. Such control typicall
Externí odkaz:
http://arxiv.org/abs/2309.13003
Autor:
Molinero, Eduardo B., Amorim, Bruno, Malakhov, Mikhail, Cistaro, Giovanni, Jiménez-Galán, Álvaro, Ivanov, Misha, Picón, Antonio, San-José, Pablo, Silva, Rui E. F.
Excitons play a key role in the linear optical response of 2D materials. However, their significance in the highly nonlinear optical response to intense mid-infrared light has often been overlooked. Using hBN as a prototypical example, we theoretical
Externí odkaz:
http://arxiv.org/abs/2307.16647
Autor:
Mitra, Sambit, Jiménez-Galán, Álvaro, Neuhaus, Marcel, Silva, Rui E F, Pervak, Volodymyr, Kling, Matthias F, Biswas, Shubhadeep
Publikováno v:
Nature 628 752 2024
Stacking and twisting atom-thin sheets create superlattice structures with unique emergent properties, while tailored light fields can manipulate coherent electron transport on ultrafast timescales. The unification of these two approaches may lead to
Externí odkaz:
http://arxiv.org/abs/2303.13044
Autor:
Tyulnev, Igor, Jiménez-Galán, Álvaro, Poborska, Julita, Vamos, Lenard, Silva, Rui F., Russell, Philip St. J., Tani, Francesco, Smirnova, Olga, Ivanov, Misha, Biegert, Jens
The valley degree of freedom of electrons in materials promises routes toward energy-efficient information storage with enticing prospects towards quantum information processing. Current challenges in utilizing valley polarization are symmetry condit
Externí odkaz:
http://arxiv.org/abs/2302.12564
We develop and demonstrate a fully real-space perspective on HHG in crystals. Due to Wannier-Stark localization induced on sub-cycle timescales in the presence of a strong field, real-space descriptions are natural for strongly driven solids. Our app
Externí odkaz:
http://arxiv.org/abs/2210.16889
Autor:
Tyulnev, Igor, Poborska, Julita, Jiménez-Galán, Álvaro, Vamos, Lenard, Smirnova, Olga, Ivanov, Mikhail, Biegert, Jens
We induce control over valley polarization with a polarization-shaped mid-infrared light field. The polarization state of the trefoil-shaped pump fields is measured by high harmonic spectroscopy, which we also use to confirm strong field control over
Externí odkaz:
http://arxiv.org/abs/2209.04928