Modulation of the photonic band structure topology of a honeycomb lattice in an atomic vapor
arXiv:1510.05872 · doi:10.1016/j.aop.2015.09.017
Abstract
In an atomic vapor, a honeycomb lattice can be constructed by utilizing the three-beam interference method. In the method, the interference of the three beams splits the dressed energy level periodically, forming a periodic refractive index modulation with the honeycomb profile. The energy band topology of the honeycomb lattice can be modulated by frequency detunings, thereby affecting the appearance (and disappearance) of Dirac points and cones in the momentum space. This effect can be usefully exploited for the generation and manipulation of topological insulators.
8 pages, 5 figures
References in corpus (8)
- A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
- Experimental realisation of the topological Haldane model
- Two-dimensional Mott-Hubbard electrons in an artificial honeycomb lattice
- Unveiling pseudospin and angular momentum in photonic graphene
- BCS-BEC crossover on the two-dimensional honeycomb lattice
- Photonic Floquet Topological Insulator in an Atomic Ensemble
- Coherent Cavitation in the Liquid of Light
- Optical vortices induced in nonlinear multilevel atomic vapors