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Statut Confirmé
Série LPTMS
Domaines physics
Date Mardi 18 Septembre 2018
Heure 11:00
Institut LPTMS
Salle LPTMS, salle 201, 2ème étage, Bât 100, Campus d'Orsay
Nom de l'orateur Roux
Prenom de l'orateur Guillaume
Addresse email de l'orateur
Institution de l'orateur LPTMS, Université Paris-Sud
Titre Quantum purification spectroscopy
Résumé We discuss a protocol based on quenching a purified quantum system that allows to capture bulk spectral features. It uses an infinite temperature initial state and an interferometric strategy to access the Loschmidt amplitude, from which the spectral features are retrieved via Fourier transform, providing coarse-grained approximation at finite times. It involves techniques available in current experimental setups for quantum simulation, at least for small systems. We illustrate possible applications in testing the eigenstate thermalization hypothesis and the physics of many-body localization. Reference: Bradraj Pandey, Kirill Plekhanov and Guillaume Roux, Quantum purification spectroscopy, preprint quant-ph arXiv:1802.04638.
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