Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Vezzoli, Stefano"'
Autor:
Tirole, Romain, Vezzoli, Stefano, Saxena, Dhruv, Yang, Shu, Raziman, T. V., Galiffi, Emanuele, Maier, Stefan A., Pendry, John B., Sapienza, Riccardo
Time-varying metamaterials rely on large and fast changes of the linear permittivity. Beyond the linear terms, however, the effect of a non-perturbative modulation of the medium on harmonic generation and the associated nonlinear susceptibilities rem
Externí odkaz:
http://arxiv.org/abs/2401.05536
Autor:
Tirole, Romain, Tilmann, Benjamin, Menezes, Leonardo de S., Vezzoli, Stefano, Sapienza, Riccardo, Maier, Stefan A.
High-index Mie-resonant dielectric nanostructures provide a new framework to manipulate light at the nanoscale. In particular their local field confinement together with their inherently low losses at frequencies below their band-gap energy allows to
Externí odkaz:
http://arxiv.org/abs/2308.07109
Autor:
Fischer, Anna, Raziman, T. V., Ng, Wai Kit, Clarysse, Jente, Dranczewski, Jakub, Saxena, Dhruv, Vezzoli, Stefano, Schmid, Heinz, Moselund, Kirsten, Sapienza, Riccardo
Coupled nanolasers are of growing interest for on-chip optical computation and data transmission, which requires an understanding of how lasers interact to form complex systems. The non-Hermitian interaction between two coupled resonators, when excit
Externí odkaz:
http://arxiv.org/abs/2306.16112
Autor:
Zotev, Panaiot G., Wang, Yue, Andres-Penares, Daniel, Millard, Toby Severs, Randerson, Sam, Hu, Xuerong, Sortino, Luca, Louca, Charalambos, Brotons-Gisbert, Mauro, Huq, Tahiyat, Vezzoli, Stefano, Sapienza, Riccardo, Krauss, Thomas F., Gerardot, Brian, Tartakovskii, Alexander I.
Publikováno v:
Laser and Photonics Reviews 2023 17(8), 2200957
Numerous optical phenomena and applications have been enabled by nanophotonic structures. Their current fabrication from high refractive index dielectrics, such as silicon or gallium phosphide, pose restricting fabrication challenges, while metals, r
Externí odkaz:
http://arxiv.org/abs/2208.06249
Autor:
Tirole, Romain, Vezzoli, Stefano, Galiffi, Emanuele, Robertson, Iain, Maurice, Dries, Tilmann, Benjamin, Maier, Stefan A., Pendry, John B., Sapienza, Riccardo
The wave nature of light is revealed by diffraction from physical structures. We report a time-domain version of the classic Young's double-slit experiment: a beam of light twice gated in time produces an interference in the frequency spectrum. The '
Externí odkaz:
http://arxiv.org/abs/2206.04362
Autor:
Tirole, Romain, Galiffi, Emanuele, Dranczewski, Jakub, Attavar, Taran, Tilmann, Benjamin, Wang, Yao-Ting, Huidobro, Paloma A., Alú, Andrea, Pendry, John B., Maier, Stefan A., Vezzoli, Stefano, Sapienza, Riccardo
We report a switchable time-varying mirror, composed of an ITO-Au stack, which can be efficiently modulated in time with over a ten-fold increase in reflectivity, with a change of 0.6. Upon interacting with the time-varying mirror, the frequency cont
Externí odkaz:
http://arxiv.org/abs/2202.05937
Autor:
Morozov, Sergii, Vezzoli, Stefano, Myslovska, Alina, Di Giacomo, Alessio, Mortensen, N. Asger, Moreels, Iwan, Sapienza, Riccardo
Publikováno v:
Nanoscale 15, 1645 (2023)
Giant shell CdSe/CdS quantum dots are bright and flexible emitters, with near-unity quantum yield and suppressed blinking, but their single photon purity is reduced by efficient multiexcitonic emission. We report the observation, at the single dot le
Externí odkaz:
http://arxiv.org/abs/2111.09090
Autor:
Galiffi, Emanuele, Tirole, Romain, Yin, Shixiong, Li, Huanan, Vezzoli, Stefano, Huidobro, Paloma A., Silveirinha, Mário G., Sapienza, Riccardo, Alù, Andrea, Pendry, J. B.
Time-varying media have recently emerged as a new paradigm for wave manipulation, thanks to thesynergy between the discovery of novel, highly nonlinear materials, such as epsilon-near-zero materials, and the questfor novel wave applications, such as
Externí odkaz:
http://arxiv.org/abs/2111.08640
Autor:
Morozov, Sergii, Pensa, Evangelina L., Khan, Ali Hossain, Polovitsyn, Anatolii, Cortes, Emiliano, Maier, Stefan A., Vezzoli, Stefano, Moreels, Iwan, Sapienza, Riccardo
Publikováno v:
Science Advances Vol. 6, no. 38, eabb1821 2020
Electron transfer to an individual quantum dot promotes the formation of charged excitons with enhanced recombination pathways and reduced lifetimes. Excitons with only one or two extra charges have been observed and exploited for very efficient lasi
Externí odkaz:
http://arxiv.org/abs/2003.06382
Publikováno v:
APL Photonics 5, 071302 (2020)
The efficient excitation of quantum sources such as quantum dots or single molecules requires high NA optics which is often a challenge in cryogenics, or in ultrafast optics. Here we propose a 3.2 um wide parabolic mirror, with a 0.8 um focal length,
Externí odkaz:
http://arxiv.org/abs/2003.03089