Controlling atom-atom interactions

Roy Zektzer, Noa Mazurski, Yefim Barash +1 more

We experimentally demonstrate the chip-scale integration of tapered nano waveguides and rubidium atoms. The optical mode interaction volume with the atoms is controlled by the tapering, giving rise to sub-Doppler atomic features and controlled interactions.

James Keaveney

Stephen Colby Rand

Roy Zektzer, Noa Mazurski, Yefim Barash +1 more

We experimentally demonstrate the chip-scale integration of tapered nano waveguides and rubidium atoms. The optical mode interaction volume with the atoms is controlled by the tapering, giving rise to sub-Doppler atomic features and controlled interactions. © 2019 The Author(s)

André Xuereb

L. Morales-Molina, E. Arévalo

We exploit the variation of the atomic interaction in order to move ultracold atoms with attractive interaction across an ac-driven periodic lattice. By breaking relevant symmetries, a gathering of atoms is achieved. Accurate control of the gathered atoms' positions can be demonstrated via the control of the atomic localization process. The localization process is analyzed with the help of the nonlinear Floquet states where the Landau-Zener tunneling between states is observed and controlled. Transport effects in the presence of disorder are discussed.