We study in this paper the dynamics of quantum nanoelectronic resonant tunneling diodes (RTDs) as excitable neuromorphic spike generators. We disclose the mechanisms by which the RTD creates excitable all-or-nothing spikes and we identify a regime of bursting in which the RTD emits a random number of closely packed spikes. The control of the latter is paramount for applications in event-activated neuromorphic sensing and computing. Finally, we discuss a regime of multi-stability in which the RTD behaves as a memory. Our results can be extended to other devices exhibiting negative differential conductance.
@article{arxiv.2011.02370,
title = {Bursting and excitability in neuromorphic resonant tunneling diodes},
author = {Ignacio Ortega and Oreste Piro and Bruno Romeira and Julien Javaloyes},
journal= {arXiv preprint arXiv:2011.02370},
year = {2021}
}