Observation of Zitterbegung in spin-orbit coupled atomic gas
S. Cao+*×, D.-W. Zhang+, H. Yan+, Z.-Y. Xue+
+Laboratory of Quantum Engineering and Quantum Materials, and School of Physics and Telecommunication Engineering,
South China Normal University, 510006 Guangzhou, China
*College of Sciences, South China Agricultural University, 510642 Guangzhou, China
×International Center for Quantum Materials, Peking University, 100871 Beijing, China
Abstract
We show that the dynamics of an interacting atomic gas with light-induced
gauge potential can be effectively described
by a one-dimensional nonlinear spinor Dirac-type equation. Then, it is
possible to observe atomic Zitterbewegung (ZB) with interatomic
interaction.
Here, the effect of two different kinds of nonlinear interaction, repulsive
and attractive, on
the ZB, are investigated numerically. Therefore, our proposal provides a more
realistic situation in simulating the atomic ZB.