Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Série LPENS-BQ
Domaines cond-mat
Date Jeudi 9 Fevrier 2023
Heure 12:45
Institut LPENS
Salle L382
Nom de l'orateur Dooley
Prenom de l'orateur Shane
Addresse email de l'orateur
Institution de l'orateur Trinity College, Dublin
Titre Entanglement enhanced metrology with quantum many-body scars
Résumé Thermalisation is almost inevitable in any sufficiently large and complicated quantum many-body system, leading to the destruction of any multipartite entanglement between its components. However, quantum many-body scars are special energy eigenstates that can prevent thermalisation, even in a quantum chaotic system. Although the scars themselves can have high multipartite entanglement, in most examples considered so far the dynamics has involved states that either have no entanglement, or have a very simple entanglement structure. Here we consider a physically motivated modification of the Hamiltonian that generates a variety of multipartite entangled states through the dynamics in the scar subspace. We show that these states can be exploited for entanglement enhanced quantum metrology. Reference: Phys. Rev. B 107, 035123 (2023)
Numéro de preprint arXiv
Commentaires
Fichiers attachés

Pour obtenir l' affiche de ce séminaire : [ Postscript | PDF ]

[ Annonces ]    [ Abonnements ]    [ Archive ]    [ Aide ]    [ ]
[ English version ]