Light-induced negative differential resistance and neural oscillations in neuromorphic photonic semiconductor micropillar sensory neurons.

ABSTRACT: Neuromorphic systems, inspired by nature, are sought to efficiently process analogue inputs in real and complex environments. This could lead to ultralow-power in-sensor intelligent edge computers. Here, we present an artificial sensory oscillator neuron consisting of a III-V semiconductor micropillar quantum resonant tunnelling diode (RTD) with GaAs photosensitive absorption layers. The oscillatory optical neuron encodes incoming analogue optical data into spatiotemporal oscillatory signals. We demonstrate that near-infrared light within a certain intensity range activates a region of negative differential resistance, and subsequently, large-amplitude voltage oscillations. As a result, optic analogue information is encoded into electrical oscillations resulting in amplification of sensory

SUBMITTER: Jacob B 

PROVIDER: S-EPMC11862094 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature