Investigating Small Device Implementation of FRET-based Optical Reservoir Computing

This work aims to develop a reservoir computing (RC) device based on the phenomenon of FRET between quantum dots (QDs), where FRET is a phenomenon in which excited states are transferred between QDs, and its properties change depending on the distance between QDs. We propose a compact structure in which optical input/output and quantum dots are adjacently placed without lenses or delays. The proposed structure exploits the QD-based optical reservoir as an intermediate layer and adopts memory to enable recurrent inputs. We evaluate the feasibility of the proposed structure by applying tasks that require nonlinearity. Simulation-based experimental results show that the proposed device can perform logistic map, time-series XOR, and NARMA10.