Bragg Scattering from a Random Potential

Autor:	Donghwan Kim, Eric J. Heller
Rok vydání:	2022
Předmět:	Physics::Optics FOS: Physical sciences General Physics and Astronomy Disordered Systems and Neural Networks (cond-mat.dis-nn) Condensed Matter - Disordered Systems and Neural Networks
Zdroj:	Physical Review Letters. 128
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.128.200402
Popis:	A potential for propagation of a wave in two dimensions is constructed from a random superposition of plane waves around all propagation angles. Surprisingly, despite the lack of periodic structure, sharp Bragg diffraction of the wave is observed, analogous to a powder diffraction pattern. The scattering is partially resonant, so Fermi's golden rule does not apply. This phenomenon would be experimentally observable by sending an atomic beam into a chaotic cavity populated by a single mode laser.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40394b6d0e1f72b65f82804869a7c99b https://doi.org/10.1103/physrevlett.128.200402 Zobrazit plný text záznamu