Confining the state of light to a quantum manifold by engineered two-photon loss
Mardi 7 février 2017 15:00
- Duree : 1 heure
Lieu : Salle "Remy Lemaire" K 223 (1er étage) bât. K de l’institut Néel/CNRS
Orateur : Zaki Leghtas (Laboratoire Pierre Aigrain - Ecole Normale Supérieure)
ATTENTION : en raison de la mise en application avancée du plan Vigipirate, toutes les personnes qui ne possèdent pas de badge CNRS doivent nous signaler leur venue avant lundi 6 février 15h45, afin d’ajouter leur nom à la liste des personnes autorisées à entrer sur le site.
Physical systems usually exhibit quantum behavior, such as superpositions and entanglement, only when they are sufficiently decoupled from a lossy environment. Paradoxically, a specially engineered interaction with the environment can become a resource for the generation and protection of quantum states. This notion can be generalized to the confinement of a system into a manifold of quantum states, consisting of all coherent superpositions of multiple stable steady states. We have confined the state of a superconducting resonator to the quantum manifold spanned by two coherent states of opposite phases and have observed a Schrödinger cat state spontaneously squeeze out of vacuum before decaying into a classical mixture. This experiment points toward robustly encoding quantum information in multidimensional steady-state manifolds.
Contact : benjamin.sacepe@grenoble.cnrs.fr
Prévenir un ami par email
Télécharger dans mon agenda