Anisotropic collisions of dipolar Bose-Einstein condensates in the universal regime

Abstract

We report the measurement of collisions between two Bose-Einstein condensates with strong dipolar interactions. The collision velocity is significantly larger than the internal velocity distribution widths of the individual condensates, and thus, with the condensates being sufficiently dilute, a halo corresponding to the two-body differential scattering cross section is observed. The results demonstrate a novel regime of quantum scattering, relevant to dipolar interactions, in which a large number of angular momentum states become coupled during the collision. We perform Monte-Carlo simulations to provide a detailed comparison between theoretical two-body cross sections and the experimental observations.

10 pages, 5 figures

References in corpus (19)

• A High Phase-Space-Density Gas of Polar Molecules
• Bose-Einstein condensation of chromium
• Bose-Einstein Condensation of Erbium
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Quantum degenerate dipolar Fermi gas
• Observation of atom pairs in spontaneous four wave mixing of two colliding Bose-Einstein Condensates
• Quantum turbulence and correlations in Bose-Einstein condensate collisions
• Imaging of s and d partial-wave interference in quantum scattering of identical bosonic atoms
• A chromium dipolar Fermi sea
• Anisotropic expansion of a thermal dipolar Bose gas
• Atomic four-wave mixing via condensate collisions
• Atom-atom correlations in colliding Bose-Einstein condensates
• Anisotropic relaxation dynamics in a dipolar Fermi gas driven out of equilibrium
• Thermodynamics and coherence of a trapped dipolar Fermi gas
• Pair correlations of scattered atoms from two colliding Bose-Einstein Condensates: Perturbative Approach
• Multiple scattering dynamics of fermions at an isolated p-wave resonance
• Numerical solution of the Boltzmann equation for trapped Fermi gases with in-medium effects
• Nonequilibrium dynamics of an ultracold dipolar gas

Cited by in corpus (6)

• Dipolar physics: A review of experiments with magnetic quantum gases
• Two-body collisions in the time-of-flight dynamics of lattice Bose superfluids
• The Multi-component Correlated Basis Function Method and its Application to Multilayered Dipolar Bose Gases
• Scattering halos in strongly interacting Feshbach molecular Bose-Einstein condensates
• Aspects of arbitrarily oriented dipoles scattering in plane: short-range interaction influence
• Collisional scattering of strongly interacting D-band Feshbach molecules in optical lattices