Výsledky vyhledávání - "Fabrizio Di Mei"

Akademický článek

Hyperbolic optics and superlensing in room-temperature KTN from self-induced k-space topological transitions

Autor: Yehonatan Gelkop, Fabrizio Di Mei, Sagi Frishman, Yehudit Garcia, Ludovica Falsi, Galina Perepelitsa, Claudio Conti, Eugenio DelRe, Aharon J. Agranat

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)

Broadband hyperbolic mediums are essential building blocks for several photonic applications. Here the authors show how nonlinearity, based on a giant electro-optic response, transforms a bulk KTN perovskite into a 3D hyperbolic material

Externí odkaz: https://doaj.org/article/23b5df9471c74e74b171d13723acd951

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Akademický článek

Observation of replica symmetry breaking in disordered nonlinear wave propagation

Autor: Davide Pierangeli, Andrea Tavani, Fabrizio Di Mei, Aharon J. Agranat, Claudio Conti, Eugenio DelRe

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)

Replica symmetry breaking describes identical copies of a randomly interacting system exhibiting different dynamics. Here, Pierangeli et al. observe this critical phenomenon in the optical wave propagation inside a disordered nonlinear waveguide.

Externí odkaz: https://doaj.org/article/70e11adf4c354a2a9a1bbecb0229dc7f

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Evidence of Chaotic Dynamics in Three-Soliton Collisions

Autor: Ludovica Falsi, Feifei Xin, Eugenio DelRe, Aharon J. Agranat, Fabrizio Di Mei, Davide Pierangeli, Claudio Conti

Publikováno v: Physical review letters
127 (2021): 133901-1–133901-6. doi:10.1103/PhysRevLett.127.133901
info:cnr-pdr/source/autori:Xin F.; Di Mei F.; Falsi L.; Pierangeli D.; Conti C.; Agranat A.J.; DelRe E./titolo:Evidence of Chaotic Dynamics in Three-Soliton Collisions/doi:10.1103%2FPhysRevLett.127.133901/rivista:Physical review letters (Print)/anno:2021/pagina_da:133901-1/pagina_a:133901-6/intervallo_pagine:133901-1–133901-6/volume:127
Physical Review Letters

We observe chaotic optical wave dynamics characterized by erratic energy transfer and soliton annihilation and creation in the aftermath of a three-soliton collision in a photorefractive crystal. Irregular dynamics are found to be mediated by the non

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::689cc5d7698a0c625b561513961c3cc3
https://pubmed.ncbi.nlm.nih.gov/34623830

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Direct Observation of Fractal-Dimensional Percolation in the 3D Cluster Dynamics of a Ferroelectric Supercrystal

Autor: Eugenio DelRe, Davide Pierangeli, Feifei Xin, Aharon J. Agranat, Ludovica Falsi, Fabrizio Di Mei, Marco Aversa

Publikováno v: Physical review letters
126 (2021): 037601-1–037601-6. doi:10.1103/PhysRevLett.126.037601
info:cnr-pdr/source/autori:Falsi L.; Aversa M.; Di Mei F.; Pierangeli D.; Xin F.; Agranat A.J.; Delre E./titolo:Direct Observation of Fractal-Dimensional Percolation in the 3D Cluster Dynamics of a Ferroelectric Supercrystal/doi:10.1103%2FPhysRevLett.126.037601/rivista:Physical review letters (Print)/anno:2021/pagina_da:037601-1/pagina_a:037601-6/intervallo_pagine:037601-1–037601-6/volume:126

We perform percolation analysis of crossed-polarizer transmission images in a biased nanodisordered bulk KTN:Li perovskite. Two distinct percolative transitions are identified at two electric field thresholds. The low-field transition involves a dire

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc6939426d527b77f4ccbeab123b4e31
https://doi.org/10.1103/physrevlett.126.037601

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Observation of an exotic lattice structure in the transparent KTa1−xNbxO3 perovskite supercrystal

Autor: Simona Binetti, Raffaella Soave, Leonardo Lo Presti, Luca Tartara, Jacopo Parravicini, Fabrizio Di Mei, Michele Mauri, Gianbattista Parravicini, Laura Loconte, Aharon J. Agranat, Ludovica Falsi, Eugenio DelRe

Publikováno v: Physical Review B. 102

We perform redundant x-ray diffraction versus temperature experiments in bulk transparent KTN. We find a violation of the standard perovskite cubic-to-tetragonal symmetry breaking at the Curie point in the form of an orthorhombic cell distortion. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65ce8c762691b4446274d93ddcd80013
https://doi.org/10.1103/physrevb.102.214110

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Soliton Maxwell demons and long-tailed statistics in fluctuating optical fields

Autor: Aharon J. Agranat, Ludovica Falsi, Davide Pierangeli, Fabrizio Di Mei, Feifei Xin, Eugenio DelRe

Publikováno v: Optics letters (Online) 45 (2020): 648–651. doi:10.1364/OL.383895
info:cnr-pdr/source/autori:Xin F.; Di Mei F.; Falsi L.; Pierangeli D.; Agranat A.J.; DelRe E./titolo:Soliton Maxwell demons and long-tailed statistics in fluctuating optical fields/doi:10.1364%2FOL.383895/rivista:Optics letters (Online)/anno:2020/pagina_da:648/pagina_a:651/intervallo_pagine:648–651/volume:45

We demonstrate experimentally in biased photorefractive crystals that collisions between random-amplitude optical spatial solitons produce long-tailed statistics from input Gaussian fluctuations. The effect is mediated by Raman nonlocal corrections t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b189759099c0b0ccaadd9c7147787438
https://pubmed.ncbi.nlm.nih.gov/32004274

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Observation of replica symmetry breaking in disordered nonlinear wave propagation

Autor: Aharon J. Agranat, Fabrizio Di Mei, Eugenio DelRe, Andrea Tavani, Davide Pierangeli, Claudio Conti

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Nature communications 8 (2017). doi:10.1038/s41467-017-01612-2
info:cnr-pdr/source/autori:Pierangeli D.; Tavani A.; Di Mei F.; Agranat A.J.; Conti C.; Delre E./titolo:Observation of replica symmetry breaking in disordered nonlinear wave propagation/doi:10.1038%2Fs41467-017-01612-2/rivista:Nature communications/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume:8
Nature Communications

A landmark of statistical mechanics, spin-glass theory describes critical phenomena in disordered systems that range from condensed matter to biophysics and social dynamics. The most fascinating concept is the breaking of replica symmetry: identical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3949bed47f804a00bcb8c67ebb3e661d
https://doaj.org/article/70e11adf4c354a2a9a1bbecb0229dc7f

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Observation of extreme nonreciprocal wave amplification from single soliton-soliton collisions

Autor: M. Flammini, Aharon J. Agranat, Davide Pierangeli, Fabrizio Di Mei, Feifei Xin, Eugenio DelRe, Ludovica Falsi

Publikováno v: Physical review. A (Online) 100 (2019). doi:10.1103/PhysRevA.100.043816
info:cnr-pdr/source/autori:Xin F.; Flammini M.; Di Mei F.; Falsi L.; Pierangeli D.; Agranat A.J.; Delre E./titolo:Observation of extreme nonreciprocal wave amplification from single soliton-soliton collisions/doi:10.1103%2FPhysRevA.100.043816/rivista:Physical review. A (Online)/anno:2019/pagina_da:/pagina_a:/intervallo_pagine:/volume:100

We report the observation of strong nonreciprocal soliton amplification mediated by a Raman-scattering-like effect in single isolated collisions. A pump soliton is found to lose the greater part of its energy to a signal soliton, irrespective of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::497a9d933936bbada0960c81cfc0e0a5
https://doi.org/10.1103/physreva.100.043816

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Using Bessel Beams to Induce Optical Waveguides

Autor: M. Flammini, Aharon J. Agranat, Feifei Xin, Davide Pierangeli, Fabrizio Di Mei, Eugenio DelRe, Ludovica Falsi

Publikováno v: Physical Review Applied 11 (2019): 024011-1–024011-8. doi:10.1103/PhysRevApplied.11.024011
info:cnr-pdr/source/autori:Xin F.; Flammini M.; Di Mei F.; Falsi L.; Pierangeli D.; Agranat A.J.; Delre E./titolo:Using Bessel Beams to Induce Optical Waveguides/doi:10.1103%2FPhysRevApplied.11.024011/rivista:Physical Review Applied/anno:2019/pagina_da:024011-1/pagina_a:024011-8/intervallo_pagine:024011-1–024011-8/volume:11

Optical fabrication of waveguides in a volume is limited by diffraction in the writing beams. We demonstrate the use of nondiffracting waves in the form of Bessel beams to fabricate scalable optical wiring through direct writing in a photosensitive v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9064d5d93b0f049725056625669bcdc

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Replica Symmetry Breaking in Nonlinear Wave Propagation

Autor: Andrea Tavani, Giulia Marcucci, Eugenio Del Re, Davide Pierangeli, Claudio Conti, Fabrizio Di Mei, Aharon J. Agranat

Publikováno v: Nonlinear Photonics 2018, Zurich Switzerland, 2-5 July 2018
info:cnr-pdr/source/autori:Pierangeli D.; Tavani A.; Di Mei F.; Marcucci G.; Agranat A.J.; Del Re E.; Conti C./congresso_nome:Nonlinear Photonics 2018/congresso_luogo:Zurich Switzerland/congresso_data:2-5 July 2018/anno:2018/pagina_da:/pagina_a:/intervallo_pagine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33e00a6b49e9feed3363e4100a31e782
https://doi.org/10.1364/np.2018.npth2c.1

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