Quantum State Control via Trap-induced Shape Resonance in Ultracold Atomic Collisions

Details Quantum State Control via Trap-induced Shape Resonance in Ultracold Atomic Collisions Quantum State Control via Trap-induced Shape Resonance in Ultracold Atomic Collisions

2003-04-12

arxiv.org/abs/quant-ph/0304093v2

Phys. Rev. Lett. 91, 183201 (2003)

Physics

Quantum Physics

4 pages, 3 figures, RevTeX; final version

Scientific paper

10.1103/PhysRevLett.91.183201

We investigate controlled collisions between trapped but separated ultracold atoms. The interaction between atoms is treated self-consistently using an energy-dependent delta-function pseudopotential model, whose validity we establish. At a critical separation, a "trap-induced shape resonance" between a molecular bound states and a vibrational eigenstate of the trap can occur. This resonance leads to an avoided crossing in the eigenspectrum as a function of separation. We investigate how this new resonance can be employed for quantum control.

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