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STAGE Pairing and topological phases in cold atoms with long-range interaction
Date de mise à jour de l’offre
Laboratoire de physique des solides :
Le laboratoire est une unité mixte de recherche de l’Université Paris-Sud et du CNRS : l’UMR 8502. Elle dépend principalement de l’Institut de Physique du CNRS, et de la section 28 du Conseil National des Universités. Il associe enseignants-chercheurs et chercheurs, expérimentateurs et théoriciens (une centaine de personnes) et accueille de nombreux étudiants et visiteurs (plus de soixante). Le soutien à la recherche est assuré par une soixantaine d’ingénieurs, techniciens et administratifs.
Description de la mission
Correlated quantum systems in low dimensions show fascinating properties that distinguish them
from their three dimensional counterparts as a consequence of the enhancement of quantum
fluctuations. Interacting fermions and bosons in one-dimension (1D) can exhibit many exotic
phases of matter. Although short-range interacting particles in 1D are rather well understood,
much less is known for long-range interacting systems.
Seminal efforts are underway in the control of artificial quantum systems to simulate arbitrary
model Hamiltonians which are now barely accessible to classical computation methods.
Ultra-cold dipolar or Rydberg-atom gases atoms can realize Bose gases with long-range
interactions.
In this internship we would like to study 1D hardcore bosons interacting via a long-range
potential. Taking only into account nearest and next-nearest interactions, it has been shown
recently that two distinct liquid phases emerge among which a cluster quantum liquid phase
where the essential granularity in the liquid is given not by individual atoms but rather by cluster
of two atoms like in a superconducting paired phase [1]. These two liquid phases are separated
by a quantum critical point with an emerging Ising degree of freedom. We want first to
characterize the topological properties of these phases by comparing them to well-tabulated
1D topological superconducting phases in condensed matter systems
from their three dimensional counterparts as a consequence of the enhancement of quantum
fluctuations. Interacting fermions and bosons in one-dimension (1D) can exhibit many exotic
phases of matter. Although short-range interacting particles in 1D are rather well understood,
much less is known for long-range interacting systems.
Seminal efforts are underway in the control of artificial quantum systems to simulate arbitrary
model Hamiltonians which are now barely accessible to classical computation methods.
Ultra-cold dipolar or Rydberg-atom gases atoms can realize Bose gases with long-range
interactions.
In this internship we would like to study 1D hardcore bosons interacting via a long-range
potential. Taking only into account nearest and next-nearest interactions, it has been shown
recently that two distinct liquid phases emerge among which a cluster quantum liquid phase
where the essential granularity in the liquid is given not by individual atoms but rather by cluster
of two atoms like in a superconducting paired phase [1]. These two liquid phases are separated
by a quantum critical point with an emerging Ising degree of freedom. We want first to
characterize the topological properties of these phases by comparing them to well-tabulated
1D topological superconducting phases in condensed matter systems
Profil recherché
Cold atoms, many-body quantum physics, Luttinger liquid, topological phases
Niveau de qualification requis
Bac + 4/5 et +
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EmployeurLaboratoire de physique des solides
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Secteur d’activité de la structureEnseignement - Formation - Recherche
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Effectif de la structureDe 51 à 250 salariés
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Type de stage ou contratStage pour lycéens et étudiants en formation initiale
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Date prévisionnelle de démarrage
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Durée du stage ou contratPlus de 4 mois et jusqu'à 6 mois
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Le stage est-il rémunéré ?Oui
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Niveau de qualification requis
Bac + 4/5 et + -
Lieu du stageLaboratoire de Physique des Solides 1 rue Nicolas Appert Bâtiment 510 91405 Orsay Cedex - France
91405 orsay -
Accès et transportsRER B