6533b858fe1ef96bd12b5f7e

RESEARCH PRODUCT

Landau-Zener Transition for Association of an Atomic Bose-Einstein Condensate With Inter-Particle Elastic Interactions Included

N. Sahakyan H.h. Azizbekyan R.s. Sokhoyan Claude Leroy Y. T. Pashayan-leroy A.m. Ishkhanyan

subject

Condensed Matter::Quantum Gases[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph][ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph][PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]

description

International audience; We study strong coupling limit of the non-linear Landau-Zener transition at coherent photo- and magneto-association of cold atoms, focusing on the role of the elastic interspecies scatterings. Using an exact third-order nonlinear differential equation for the molecular state probability, we develop a nontrivial version of the strained parameter method which enables us to construct a highly accurate and simple analytic approximation describing time dynamics of the coupled atom-molecular system.

https://hal.archives-ouvertes.fr/hal-00451006