Comment on "Gain-assisted superluminal propagation and rotary drag of photon and surface polaritons"

Bruno Macke (1) , Bernard Ségard (1)

1 PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523

In their study of superluminal propagation, rotary drag and surface polaritons [Phys. Rev. A 96, 013848 and 049906(E) (2017)], Khan et al. consider a four-level atomic arrangement with transitions in the optical domain. In fact, the values they give to the parameters lead to a probe wavelength lying in the decimeter band and we point out that, in such conditions, all their results are irrelevant.

Domaines: Optique [physics.optics]

Bruno Macke, Bernard Ségard. Comment on "Gain-assisted superluminal propagation and rotary drag of photon and surface polaritons". Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2019, 99 (5), ⟨10.1103/PhysRevA.99.057801⟩. ⟨hal-02138383⟩