Investigation of PT- and PT-antisymmetry in two dimensional (2D) optical lattices

A collection of cold rubidium atoms in three-level configuration trapped in two dimensional (2D) optical lattices is revisited. The trapped atoms are considered in the Gaussian density distribution and we study the realization of PT-, non-PT-, and PT-antisymmetry in 2D optical lattices. Such a fascinating modulation is achieved by spatially modulating the intensity of the driving field. Interestingly, control over PT- to non-PT-symmetry and vice versa in 2D optical lattices is achieved via a single knob such as microwave field, probe field and relative phase of optical and microwave fields. In addition, control over PT-antisymmetry to non-PT-symmetry and vice versa is also achieved via relative phase. The coherent control of PT- non-PT- and PT-antisymmetry in optical susceptibility of 2D atomic lattices can be extended to 2D optical devices including modulators, detectors, and the 2D atomic lattices can also be extended to photonic transistors and diodes. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement