H2020Индивидуална стипендия2016–2017

AnTraQuGa · Anderson Transition in a Quantum Gas Signatures and Characterization

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

Период: 2016-01-01 → 2017-12-31
Финансиране от ЕС: 185 076 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Локализацията на Андерсън изучава както хаосът в една среда може напълно да спре движението на частици или светлина. Разбирането на този процес помага за разработването на по-ефективни светодиоди и електронни технологии.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Anderson Transition in a Quantum Gas Signatures and Characterization

Anderson localization – an effect leading to a complete halt of transport in disordered media – is a fundamental phenomenon, ubiquitous in all wave physics. Anderson localization turns a conductor into an insulator, allows focusing or theoretically even stopping light with a sufficiently strong disorder. Hence, study of localisation yields a great technological potential as it plays for example a major role in the context of engineering of highly efficient LEDs. Yet, the transition to the localised state has so far eluded thorough experimental investigation. The AnTraQuGa-Projects aims at studying the Anderson transition with unprecedented precision. For that we use ultra-cold atoms that are known to be a very well isolated and controlled system. Measuring the energy at which the transition occurs as well as studying the behaviour of the atoms close to the transition will help to improve theories of Anderson localisation. Deep understanding of Anderson localisation is an important building block for future developments of electronic and lighting technologies.

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

Цел на проекта

Anderson localization (AL) – an effect arising from interference of multiple-scattering events and leading to a complete halt of transport in disordered media – is a fundamental phenomenon, ubiquitous in all wave physics. Ultra-cold quantum gases in disordered optical potentials offer a clean environment to study AL. First evidences of the transition between localized and diffusive states have been recently reported with this systems. However, direct signatures of AL and a precise investigation of this transition are still lacking and would require new approaches, which is at the heart of this proposal. The objectives are:- Exploring the recently predicted “Coherent Forward Scattering” peak: a new distinct feature of AL, yet so far not observed in any systems.- Studying the critical regime by measuring the position of the transition and the associated critical exponents.The anticipated results will serve as test bed for the most advanced theories of AL and provide better understanding of its underlying mechanism.To achieve these goals, we will rely on the expertise of the host in the field of AL of ultra-cold atoms, in particular regarding the analysis of the momentum distributions of atoms. Most importantly, we will develop original approaches, based on techniques using state-selective disorder potentials, and enabling a fine control of the atomic energy distribution around the transition.The fellowship will enable the applicant to contribute his expertise of state-dependent potentials to the development and the implementation of the selective disorder. This new technique is likely to become a standard tool for the study of transport phenomena of ultra-cold atoms in disorder. A secondment to the partner organization with strong expertise in AL and in control of atomic interactions is also part of the proposal.Thus, this project will create a synergy of the applicants knowledge and the expertise of the host organization and the partner organization.

Оригинален текст от CORDIS (на английски).

Участници

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS · ParisКоординаторФранция