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Statut |
Confirmé |
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Série |
SEM-PHYS-ENS |
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Domaines |
quant-ph |
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Date |
Mardi 3 Octobre 2017 |
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Heure |
17:15 |
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Institut |
DPT-PHYS-ENS |
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Salle |
Salle Dussane, 45 rue d'Ulm, ENS Paris |
|
Nom de l'orateur |
Brune |
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Prenom de l'orateur |
Michel |
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Addresse email de l'orateur |
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Institution de l'orateur |
Laboratoire Kastler Brossel |
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Titre |
Prix des Trois Physiciens: From quantum measurement to quantum simulations with Rydberg atoms |
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Résumé |
Award ceremony and special seminar by the 2017 recipient of the "Prix des Trois Physiciens".
Rydberg atoms have many exaggerated properties with respect to ordinary atomic levels with
lower energy. Their large orbital corresponds to huge dipoles, strongly coupled to microwave
fields. We used this feature for probing a field made of a few microwave photons trapped in a
high Q superconducting cavity. We will present experiments achieving non-destructive photons
counting, and exhibiting some of the most intriguing feature of quantum measurements : state
projection, quantum jumps and decoherence of Schrödinger kitten states.
The unprecedented polarizability of Rydberg atoms makes then exhibit unusually strong
dipole-dipole interaction. Spontaneous emission of circular Rydberg atoms can also be strongly
suppressed by using metallic structures controlling the radiation field mode density. We
propose the construction of a quantum simulator of XXZ spin chain or ladder Hamiltonian by
using linear chains of trapped circular Rydberg atoms. We will discuss open condensed matter
problems, which may be addressed with this simulator. |
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Numéro de preprint arXiv |
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Commentaires |
!! UNUSUAL LOCATION : SALLE DUSSANE, 45 RUE D’ULM !! |
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Fichiers attachés |
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