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Colloquia

ics Colloquium
Friday, March 27, 2009
4:00 PM
Physics Building, Room 204
Note special time.
Thad Walker [Host: Tom Gallagher]
University of Wisconsin
"Quantum Manipulation of Neutral Atoms Without Forces"
 
 Slideshow (PDF)
ABSTRACT:
Interactions between pairs of Rydberg atoms can be so strong that the energy level structure of one atom is dramatically altered by the presence of a second atom 10 microns away. This "Rydberg blockade" is predicted to allow conditional quantum manipulation of individual atoms based on the quantum state of a distant neighboring atom. When successful, the resulting entanglement process occurs without the atoms experiencing any significant interatomic forces. I will describe experiments at the University of Wisconsin that demonstrate blockade-conditioned coherent evolution of a single Rb atom based on the quantum state of a second atom 11 microns away. Extensions of these ideas to deterministic single atom and single photon sources with atomic ensembles will be presented.
SLIDESHOW:

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