Seminar Ignacio Ortega: Excitable dynamics in a quantum resonant tunneling diode-based spike generator

Abstract: With the recent growth of Artificial Intelligence and Neural Networks systems, alternatives to the Von Neumann architecture are in development to run these algorithms efficiently in terms of speed, size and power consumption. In this theoretical study, a neuromorphic, optoelectronic device consisting of a resonant tunneling diode (RTD) and a nanolaser diode (LD) is demonstrated as an excitable pulse generator. The integrated RTD-LD unit is injected with square voltage pulses. Two configurations are considered, with the RTD biased close to each side of the NDC region. Depending on the input DC current injected into the LD, the unit may momentarily emit light, cut emission or change its emission intensity. A quantitative characterization of the response pulse is realized in terms of its width, amplitude, response delay, distortion and jitter times. Finally, two RTD-LD units are integrated via a photodetector and their feasibility to produce and propagate optical pulses is studied.

link: https://eu.bbcollab.com/guest/255f34c83a284c93bb9dee4f0115526b