Figure 1: Plasmonic–atomic integrated-coupled system.
From: Fano resonances and all-optical switching in a resonantly coupled plasmonic–atomic system
(a) Illustration of the plasmonic–atomic device consisting of a glass prism, covered by a stack of 3-nm-thick Ti layer, 42-nm-thick gold layer and 5-nm-thick MgF2 layer bonded to an atomic vapour cell. (b) Photograph of the bare plasmonic prism and the plasmonic–atomic device. (c) Schematic representation of the experimental setup. (d) Level scheme schematics of plasmonic–atomic-coupled system. Here, level |i> represents the incident state, coupled directly to the plasmonic broad state |p> with a coupling strength g. The coupling between the plasmonic state and the discrete atomic state |a> is also possible with a coupling coefficient v. Finally, an indirect coupling may be achieved through the incident level to the atom with a coupling coefficient w.
