Polaritons in Nanomaterials

Polaritons are quasiparticles that result from strong coupling between electromagnetic waves and electric/magnetic dipoles. As electromagnetic eigenmodes, they are self-sustained and can propagate with larger wave vectors than that of bare light waves of the same energy. Therefore, polaritons can beat the diffraction limit of classical optics by confining light into regions that are much smaller than its wavelength and lead to advances in...