Collective many-body interaction in Rydberg dressed atoms

We present a method to control the shape and character of the interaction potential between cold atomic gases by weakly dressing the atomic ground state with a Rydberg level. For increasing particle densities, a crossover takes place from a two-particle interaction into a collective many-body intera...

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Bibliographic Details
Published in:Physical review letters 2010-10, Vol.105 (16), p.160404-160404, Article 160404
Main Authors: Honer, Jens, Weimer, Hendrik, Pfau, Tilman, Büchler, Hans Peter
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
CONTROL
DENSITY
DIPOLES
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
GROUND STATES
MANY-BODY PROBLEM
MULTIPOLES
PHYSICAL PROPERTIES
POTENTIALS
RYDBERG STATES
VAN DER WAALS FORCES
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Summary:We present a method to control the shape and character of the interaction potential between cold atomic gases by weakly dressing the atomic ground state with a Rydberg level. For increasing particle densities, a crossover takes place from a two-particle interaction into a collective many-body interaction, where the dipole-dipole or van der Waals blockade phenomenon between the Rydberg levels plays a dominant role. We study the influence of these collective interaction potentials on a Bose-Einstein condensate and present the optimal parameters for its experimental detection.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.105.160404