Zobrazeno 1 - 10
of 712
pro vyhledávání: '"Mordechai Segev"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract When an electromagnetic (EM) wave propagates in a medium whose properties are varied abruptly in time, the wave experiences refractions and reflections known as time-refractions and time-reflections, both manifesting spectral translation as
Externí odkaz:
https://doaj.org/article/767478d1b80b4f288bb96b0a8ba6111d
Autor:
Moshe-Ishay Cohen, Christina Jörg, Yaakov Lumer, Yonatan Plotnik, Erik H. Waller, Julian Schulz, Georg von Freymann, Mordechai Segev
Publikováno v:
Light: Science & Applications, Vol 9, Iss 1, Pp 1-11 (2020)
Photonics: Manipulating light with artificial fields Artificial gauge fields are a technique to engineer the potential landscape such that neutral particles mimic the dynamics of charged particles driven by external fields. Researchers in Israel and
Externí odkaz:
https://doaj.org/article/d51fe3467eab4869b0e31d74da411a10
Publikováno v:
Physical Review X, Vol 12, Iss 2, p 021007 (2022)
Waves traveling in weakly disordered media possessing long-range correlations experience a universal phenomenon known as branched flow, where the waves split and form channels (branches) of enhanced intensity that keep dividing as the waves propagate
Externí odkaz:
https://doaj.org/article/5cb843af32fb487f935d6623f2c2b336
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-11 (2017)
Vortex electron beams are generated using single electrons but their low beam-density is a limitation in electron microscopy. Here the authors propose a scheme for the realization of non-diffracting electron beams by shaping wavepackets of multiple e
Externí odkaz:
https://doaj.org/article/03d62b3719c74f0194f48d38c8886d30
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-9 (2016)
Features much smaller than the wavelength are not expected to have a significant impact on the transport of a wave. Here, the authors show that Anderson localization can dominate light transport in a one-dimensional disordered system, even when the d
Externí odkaz:
https://doaj.org/article/1393ee2190944a33b0ad8d17bbf40a78
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Wavefront shaping is typically carried out outside the medium within which the beam is propagating. Sheng et al.exploit concepts inspired by General Relativity for wavefront shaping within optical waveguide settings, constructing narrow collimated be
Externí odkaz:
https://doaj.org/article/fdbd432500c34af782df8b01b4402ef0
Autor:
Zhaoju Yang, Eran Lustig, Gal Harari, Yonatan Plotnik, Yaakov Lumer, Miguel A. Bandres, Mordechai Segev
Publikováno v:
Physical Review X, Vol 10, Iss 1, p 011059 (2020)
We propose a system that exploits the fundamental features of topological photonics and synthetic dimensions to force many semiconductor laser resonators to synchronize, mutually lock, and under suitable modulation emit a train of transform-limited m
Externí odkaz:
https://doaj.org/article/3293f85255c746b0b0261e59c030bd99
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-1 (2018)
Nature Communications 7: Article number: 12927 (2016); Published: 6 October 2016; Updated: 8 February 2018. The original version of this Article contained an error in the caption to Fig. 2b, which incorrectly read ‘Localization length as a function
Externí odkaz:
https://doaj.org/article/2832b3638e85437cb49ba2f1f22fcb7b
Publikováno v:
Physical Review X, Vol 8, Iss 1, p 011001 (2018)
We present the first experimental observation of accelerating beams in curved space. More specifically, we demonstrate, experimentally and theoretically, shape-preserving accelerating beams propagating on spherical surfaces: closed-form solutions of
Externí odkaz:
https://doaj.org/article/142e2bc3eb6f42ebba88e7b1e53e4520
Publikováno v:
Physical Review X, Vol 6, Iss 1, p 011016 (2016)
We show that it is possible to have a topological phase in two-dimensional quasicrystals without any magnetic field applied, but instead introducing an artificial gauge field via dynamic modulation. This topological quasicrystal exhibits scatter-free
Externí odkaz:
https://doaj.org/article/e6d9e2c596b542af900449fd3a8998a2