H2020Индивидуална стипендия2018–2019

RydSpin · Nonequilibrium many-body spin dynamics in strongly interacting Rydberg systems

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

Период: 2018-07-01 → 2019-06-30
Финансиране от ЕС: 79 730 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Динамиката на електронните спинове в системи от Ридбергови атоми разкрива как се променят магнитните свойства на материята при наличие на смущения. Разбирането на тези процеси помага за развитието на технологии в областта на физиката на кондензираната материя.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Nonequilibrium many-body spin dynamics in strongly interacting Rydberg systems

Dipolar interactions between electron spins affect magnetic properties of matter on microscopic and macroscopic scales. An understanding of dynamical quantum magnetism enables researchers to explain behaviors of magnetic materials, which lead to a development of technology related to condensed matter physics. However, there are still open questions about how a non-equilibrium spin system evolve in the presence of disorder and long-range interactions. The description of this evolution is generally difficult to achieve because of the complexity in the preparation of large samples with fully control in states and experimental conditions. In this work, we used Rydberg-spin systems to study non-equilibrium many-body spin dynamics. With an ability to fully control the spin state and spin interactions, the work uncovered the relaxation dynamics and reveal the evolution of the spin systems. The techniques implemented in this work including state-selective detection as well as precise microwave control for spin manipulation can be advantageous for other research groups that utilize spin systems to study magnetism as well as condensed matter physicists.

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

Цел на проекта

There is a currently growing interest in utilizing dipolar interacting Rydberg spin systems to simulate behavior of electron spins in magnetic materials. The tunable strong, long-range interactions as well as the long lifetimes of highly excited Rydberg atoms enable the study of coherent spin dynamics with beyond-nearest-neighbor interactions. An understanding of dynamical quantum magnetism enables researchers to explain the behavior of magnetic materials in microscopic and macroscopic scales, which leads to a development of technology related to condensed matter physics.In this action, I propose to investigate short time spin dynamics during magnetic-phase transition and long time dynamics of non-equilibrium spin systems towards thermal equilibrium. Rubidium-87 Rydberg spins will be prepared in a well-define magnetic-spin state utilizing lasers and microwave fields. The short-time spin dynamics will be measured after a quench generated from a microwave field at chosen field strength and frequency. A global magnetization of the systems and a spatial correlation between spins will be extracted using a state-selective field ionization of Rydberg states and an interaction-enhanced imaging method, respectively. By varying the quench parameters and the spin-spin interactions, we expect to obtain the quench conditions that lead to thermal equilibrium of the system. During the action, I will obtain scientific training about Rydberg-spin systems and microwave engineering under the supervision of experienced researchers. At the same time, I will transfer my expertise about high-resolution imaging technique as well as state-selective field ionization to the host institute. Aside from scientific activities, I will also involve in project administration and organization as well as take part in dissemination and outreach activities. The scientific and the career trainings throughout the action will benefit me for my future career as a professional researcher.

Оригинален текст от CORDIS (на английски).

Участници

RUPRECHT-KARLS-UNIVERSITAET HEIDELBERG · HeidelbergКоординаторГермания