Analytic model for elastic scattering losses from colliding condensates M. Trippenbach P. Zin, J. Chwedenczuk, A. Perez Physics Department, Warsaw University, Yehuda Band Chemistry Department, Ben Gurion University

Outline Spontaneous & Stimulated – processes Examples from Quantum Optics Examples from BEC (elastic scattering) Stochastic Approach Benchmark – our simple quantum model to study properties of the scattered atoms

Parametric down conversion

Superradiance

Bragg Scattering

Elastic collisions

Model - 1

Model - 2

Model - 3

Summary We presented FULL quantum model (multimodel) to study how spontaneously initiated emission can get into stimulated mode Scattered atoms form a squeezed state that can be viewed as a multi-component condensate. Not only are we able to calculate the dynamics of mode occupation, but also the full statistics of scattered atoms. Test ground for other (stochastic) methods