H2020Индивидуална стипендия2019–2021

TOPLASMON · Experimental study of plasmon polaritons in topological insulators and Weyl Semi-Metals.

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2019-05-01 → 2021-04-30
Финансиране от ЕС: 172 932 €
Участници: 1
Схема: MSCA-IF-EF-ST

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Накратко на български

Плазмонните поларитони в топологичните изолатори и вейлевите полуметали се изучават, за да се концентрира светлината в изключително малък обем. Това помага за разбирането на взаимодействието между светлината и материята, което е важно за квантовите изчисления и химичните сензори.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Experimental study of plasmon polaritons in topological insulators and Weyl Semi-Metals.

Confining light to the smallest possible volume has been a long-standing challenge for researchers. First, because it contributes to the understanding of optics and of how light behaves. Second, because confining light “concentrates” it – it makes light interact much more strongly with matter than it would otherwise. This accelerates various emission\absorption processes, with potential applications ranging from quantum computing to chemical sensing. In its extreme, strongly confined light can completely hybridize with matter (atoms, molecules) and create new phases of matter which do not exist otherwise. However, so far, the quest to make smaller and smaller cavities has also faced a fundamental limitation – powerful optical absorption that occurs on the nanoscale and dramatically reduces cavity performance. Various approaches have been considered by researchers to reduce to size of cavities without increasing absorption, but so far it has not been possible to create cavities that are simultaneously small and high performing. Succeeding to do so is an important step towards realizing new applications and new and fundamentally interesting states of matter.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Polaritons are joint excitations of light and matter and constitute an important field of study in optics. Historically, many new types of polaritons have been discovered by inspecting novel and interesting material systems, with graphene plasmons being a prominent example. Project TOPLASMON aims to study and harness the polaritons in an even newer material category - topological materials - which have recently been discovered and are intensively studied in condensed matter physics. These materials include topological insulators, which have conducting edges but insulating bulks, and Weyl Semimetals, which support unique Fermi-arc states. At the heart of project TOPLASMON is a novel measurement system, which combines a recently invented cryogenic scanning near field microscope with a THz laser and detector. This setup will allow, for the first time, the observation of topological polaritons of several varieties: (1) Chiral polaritons in topological insulators which exhibit reduced backscattering from defects. Specifically, I will working with the recently realized 2D topological insulators. (2) Fermi-arc Polaritons in Weyl Semimetals, whose dispersion is tied in with the properties of the underyling crystal, thereby probing the properties of these new materials. These polaritons are expected to have an in-plane hyperbolic dispersion and may even lead to realization of miniaturized optical isolators, leading to an important technological breakthrough. (3) Strong plasmonic resonances. I will study plasmon-polariton excitations in topological material, at frequencies near the plasmonic resonance. Empowered by the exceedingly long electron scattering times measured in several recent experiments, highly confined plasmons with unprecedentedly long propagation distances are exoected, a dramatic result for both science and technology. This proposal is therefore set to open a new study area at the forefront of research both in condensed matter and nanophotonics.

Оригинален текст от CORDIS (на английски).

Участници

FUNDACIO INSTITUT DE CIENCIES FOTONIQUES · CastelldefelsКоординаторИспания