Two dimension PT symmetry spacial soliton in atomic gases with linear and nonlinear potentials

Abstract

We present a physical scheme to realize combined linear and nonlinear optical potentials with parity-time (PT) symmetry and two dimensional (2D) spacial solitons in a coherent atomic gas. It is shown that the combined PT-symmetric potentials can be created through the spatial modulation of the control and relevant atomic parameters. We find that the imaginary part of the nonlinear PT potential plays a crucial role for the occurrence of the PT phase transition. We demonstrate that the system supports stable 2D dipole solitons and vortex solitons, which can be managed via tuning PT potentials.