Atoms and cavities: Explorations of quantum entanglement
- Laboratoire Kastler Brossel, Departement de Physique, Ecole normale superieure, Paris (France)
The interaction of circular Rydberg atoms with a high-quality microwave cavity makes it possible to realize complex quantum state manipulations. The state of an atom can be 'copied' onto the cavity. Reversing this operation at a later time with a second atom, we realize an elementary 'quantum memory' holding an atomic quantum coherence for a while in a cavity mode. We have also generated two-atom entangled states of the Einstein-Podolsky-Rosen type. At variance with previous experiments, this one implies massive particles in a completely controlled process. These entanglement manipulations can be generalized to more complex or to mesoscopic systems and open the way to new tests of fundamental aspects of the quantum world.
- OSTI ID:
- 21208116
- Journal Information:
- AIP Conference Proceedings, Vol. 477, Issue 1; Conference: 16. international conference on atomic physics, Windsor, ON (Canada), 3-7 Aug 1998; Other Information: DOI: 10.1063/1.59375; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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