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Interacting Atoms Under Strong Quantum Confinement



Eite Tiesinga, Carl J. Williams, F H. Mies, Paul S. Julienne


We calculate the energy level shifts of a tightly-confined trapped alkali atom in the presence of a second trapped atom. A complete microscopic description of the interaction energy between the two atoms is used. This allows us to study tightly-confined atoms near a Feshbach resonance and to evaluate the usefulness of the regularized delta-function potential approximation. We present results for sodium and cesium when confined in a spherically symmetric harmonic optical trap. Possible implications of the level shifts and collisional decoherence for quantum computing with atomic systems are given.
Physical Review A (Atomic, Molecular and Optical Physics)
No. 6


Bose-Einstein condensation, confined systems, optical lattices


Tiesinga, E. , Williams, C. , Mies, F. and Julienne, P. (2000), Interacting Atoms Under Strong Quantum Confinement, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed April 18, 2024)
Created June 1, 2000, Updated February 17, 2017