arXiv subjects

G. Behinaein

Publications and source records attributed to G. Behinaein.

2 recordsLinked to original sources

arXiv2007

Resonances of the Quantum $δ$-Kicked Accelerator

We report the observation of high order resonances of the quantum $δ$-kicked accelerator using a BEC kicked by a standing wave of light. The signature of these resonances is the existence of quantum accelerator modes. For the first time quantum accelerator modes were seen near 1/4 and 1/3 of the Talbot time. Using a BEC enabled us to study the detailed structure of the modes and resonances which are related to the fractional Talbot effect. We present a general theory for this system and apply it to predict the behavior of the accelerator modes.

physics.atom-ph↗

arXiv2006

Exploring the phase space of the quantum delta kicked accelerator

We experimentally explore the underlying pseudo-classical phase space structure of the quantum delta kicked accelerator. This was achieved by exposing a Bose-Einstein condensate to the spatially corrugated potential created by pulses of an off-resonant standing light wave. For the first time quantum accelerator modes were realized in such a system. By utilizing the narrow momentum distribution of the condensate we were able to observe the discrete momentum state structure of a quantum accelerator mode and also to directly measure the size of the structures in the phase space.

physics.atom-ph↗