Quantum state control via trap-induced shape resonance in ultracold atomic collisions.
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 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.
Stock
René
R
Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA. restock@info.phys.unm.edu
Deutsch
Ivan H
IH
Bolda
Eric L
EL