Experiments on entangled atom-cavity states:" Schrodinger cats" and other tests of quantum theory

S. Haroche (1) , E Hagley (2) , C Wunderlich (2) , M Brune (1) , Jm Raimond (2) , J Dreyer (2) , Abdelhamid Maali (2) , X Maitre (2) , G Nogues (2)

1 LKB [Collège de France] - Laboratoire Kastler Brossel
2 LKB (Lhomond) - Laboratoire Kastler Brossel

Various experiments on entangled atomcavity states in cavity QED will be presented. Rydberg atoms can be coupled to a superconducting cavity either resonantly by emitting and absorbing photons, or nonresonantly, by producing a macroscopic phase shift on a coherent field injected in the cavity (single atom dispersive index effect). By sending atoms one at a time across the cavity, it is possible to use these resonant and dispersive effects to entangle atoms with each other or with the cavity field.

Mots clés: Quantum entanglement; Quantum mechanics; Polarization; Delay effects; Phase measurement; Optimized production technology; Quantum well devices

Domaines: Physique [physics]

S. Haroche, E Hagley, C Wunderlich, M Brune, Jm Raimond, et al.. Experiments on entangled atom-cavity states:" Schrodinger cats" and other tests of quantum theory. Quantum Electronics and Laser Science Conference, 1997. QELS'97, May 1997, Baltimore, MD, United States. pp.6-7. ⟨hal-01696884⟩