Fundamental physical phenomena in photonic graphene

Fundamental physical phenomena in photonic graphene

Graphene, a two-dimensional (2D) honeycomb lattice of carbon atoms, has been highly touted and tested for many applications in recent years, apart from elucidating fundamental phenomena in quantum and condensed matter physics. “Photonic graphene”, an artificial honeycomb array of evanescently coupled waveguides, has proven to be a useful tool for studying graphene physics in various optical settings. Since photonic lattices offer exquisite control over initial conditions and allow for monitoring the actual wavefunction (including phase), and it is possible to directly observe graphene wave dynamics using classical light waves in regimes difficult or inaccessible for natural graphene. In our recent work, we have experimentally demonstrated a host of novel phenomena including unconventional edge states and pseudospin-mediated vortex generation in optically induced photonic graphene systems. These results also have impacts to other artificial graphene systems beyond optics.

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
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