HEИндивидуална стипендия2023–2025

NEOVITA · Non-equilibrium optically levitated interacting nanoparticle arrays

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

Период: 2023-04-01 → 2025-03-31
Финансиране от ЕС: 183 601 €
Участници: 1
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Оптично левитирани наночастици се изследват, за да се види как взаимодействат в групи, например при създаване на масиви от до десет частици. Това помага за разбирането на колективните вълнови явления и начина, по който се разпределя енергията в такива системи.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Non-equilibrium optically levitated interacting nanoparticle arrays

This project aims at exploring the nonequilibrium and collective mechanical behaviour of an array of optically trapped nanoparticles (NP) by combining the nonreciprocal light induced interactions between two NPs with the optical control techniques of the atomic tweezer arrays. With these tools the goal is to upscale the experimental platform to multiparticle arrays and to study thermalization, and collective wave phenomena like Anderson localization and how these are affected by the dissipative nonreciprocal interactions. The four work packages (WP) of the project define the main research directions. The WP1 “More particles” consists in finding a way to simultaneously trap up to ten NPs, while maintaining the individual position readouts and the control of the two-body interactions. The WP2 “cavity assisted cooling” aims at placing the NP array into a cavity to cool NP motions via coherent scattering into the cavity mode. The WP3 “prethermalization and disorder” consists in exploring the nonequilibrium evolution of the array in different configurations to search for the prethermalization or the Anderson localization (and possibly the many-body-localization) in the array’s collective dynamics. Finally, the WP4 “manipulation of the non-reciprocal interactions” consists in exploring the full toolbox of the non-reciprocal light-induced interactions and applying the suitable parameters to realize a specific non-Hermitian potential that could suppress the phononic multiple scattering of the Anderson localized array and lead to the observation of the constant intensity waves (CIW).

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

Цел на проекта

We propose the exploration of many-body quantum physics with a new experimental platform, based on theoptically levitated and cooled arrays of spherical nanoparticles with strong and controllable interactions. Therecent works by the host institution demonstrated the cavity assisted cooling of a single nanoparticle to itsmotional quantum ground state as well as the simultaneous trapping of two nanoparticles with full controlover the interactions between them. In this work we shall extend these results to the multiple particles. Thiswill be on the one hand an important milestone towards achieving the many-body regime and on the otherhand, the first observation of the cavity assisted cooling of an array of nanoparticles via coherent lightscattering. The realisation of this milestone will enable us to study the system’s non-equilibrium relaxation afterprecise perturbation protocols. Using the natural isolation from the environment, we shall study thethermalisation of a nearly isolated few-particle quantum system. Depending on the energetic landscape, as wellas on the nature and range of interactions, we expect to observe motional pre-thermalisation, or the absenceof thermalisation with the onset of the Anderson localisation or the Many-Body Localisation of phonons. Finally,we shall explore the controllable non-reciprocity of the inter-particle interactions by breaking the directionalsymmetry of the inter-particle forces by conferring to them the direction dependent phases. Combining thiswith the dissipative nature of these forces, we aim at implementing a specifically tailored non-hermitianHamiltonian describing the constant intensity waves.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITAT WIEN · WienКоординаторАвстрия