Interaction-induced instability and chaos in the photoassociative stimulated Raman adiabatic passage from atomic to molecular Bose-Einstein condensates

Amit Dey, Amichay Vardi

Research output: Contribution to journalArticlepeer-review

Abstract

We study the effect of interactions on the conversion of atomic-to-molecular Bose-Einstein condensates via stimulated Raman adiabatic passage. Both energetic instability during avoided crossings and dynamical instability during chaotic intervals limit adiabaticity and impose low sweep-rate boundaries on the efficiency of the process. For the diabatic traverse of avoided crossings, we find a reciprocal power-law dependence of the final unconverted population on sweep rate. For the traverse of chaos, we find a sharp low-rate boundary determined by the dynamical instability parameters. The interplay of these two mechanisms determines which instability controls the failure of molecular production. A judicious choice of sweep parameters is hence required to restore the process efficiency.

Original languageAmerican English
Article number053627
JournalPhysical Review A
Volume101
Issue number5
DOIs
StatePublished - 1 May 2020

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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