Ag<sub>2</sub>S island network reservoir that works with direct optical signal inputs
Yosuke Shimizu, Kazuki Minegishi, Hirofumi Tanaka, Tsuyoshi Hasegawa
Abstract
Abstract A physical reservoir that accepts direct light irradiation as input was developed using a Ag 2 S island network. Short-term memory and nonlinearity required for reservoirs are achieved by the diffusion of Ag + cations in each Ag 2 S island and the growth of Ag filaments between Ag 2 S islands. We found that direct light irradiation to Ag 2 S islands changes local conductivity in a reservoir, which enhances the performance in short-term memory and nonlinearity of the reservoir. Using the effect, we performed a pattern classification of light that was irradiated to a Ag 2 S island network reservoir through a rectangular slit, which resulted in the accuracy of over 95%.