Sub-femtojoule all-optical switching using a photonic-crystal nanocavity

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Exciton–polariton light–semiconductor coupling effects (2011, background): “It is also appropriate for realizing fast several-photon switche”
Ultralow-power all-optical RAM based on nanocavities (2012, background): “In addition, carrier generation leads to thermal heating, which causes a redshift as a result of a thermo-optic effect, and the carriers rapidly escape from the cavity by means of fast diffusio”
Controlling light with light using coherent metadevices: all-optical transistor, summator and invertor (2014, methodology): “or an input intensity ratio Iα/Iβ = 100 and mutual phase θ = 3π/4. (b) Gain G as a function of wavelength; the two curves are derived from [in black] the approximate sM(λ) scattering parameter of Eq. (6) and [in green] the Sij coefficients of the metamaterial. Figure 6: Performance of the four-port ”
Deep learning with coherent nanophotonic circuits (2016, background): “Almost the same energy performance and speed can be obtained if optical bistability [24, 27, 39] is used instead of saturable absorption as the enabling nonlinear phenomenon.”