Toward Fast Neural Computing using All-Photonic Phase Change Spiking Neurons

Scientific Reports
Indranil ChakrabortyKaushik Roy

Abstract

The rapid growth of brain-inspired computing coupled with the inefficiencies in the CMOS implementations of neuromrphic systems has led to intense exploration of efficient hardware implementations of the functional units of the brain, namely, neurons and synapses. However, efforts have largely been invested in implementations in the electrical domain with potential limitations of switching speed, packing density of large integrated systems and interconnect losses. As an alternative, neuromorphic engineering in the photonic domain has recently gained attention. In this work, we propose a purely photonic operation of an Integrate-and-Fire Spiking neuron, based on the phase change dynamics of Ge2Sb2Te5 (GST) embedded on top of a microring resonator, which alleviates the energy constraints of PCMs in electrical domain. We also show that such a neuron can be potentially integrated with on-chip synapses into an all-Photonic Spiking Neural network inferencing framework which promises to be ultrafast and can potentially offer a large operating bandwidth.

References

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Sep 30, 2017·Science Advances·Zengguang ChengHarish Bhaskaran

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Citations

Aug 7, 2019·Physical Review Letters·Tao YanQionghai Dai
Jun 9, 2020·Light, Science & Applications·Theoni AlexoudiNikos Pleros
Jun 4, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Tomasz Blachowicz, Andrea Ehrmann
Dec 16, 2020·IScience·Min-Kyu KimJang-Sik Lee
Oct 31, 2020·Sensors·Mircea HuleaAlexandru Barleanu
Jan 1, 2021·Optics Express·Joshua RobertsonAntonio Hurtado
May 26, 2021·Light, Science & Applications·Theoni AlexoudiNikos Pleros
Jul 3, 2021·Materials·Irene VassaliniDomenico de Ceglia
Aug 24, 2019·Nano Letters·Syed Ghazi SarwatHarish Bhaskaran
Aug 24, 2021·Frontiers in Neuroscience·Zong-Xiao LiFei Zhuge

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Methods Mentioned

BETA
chip

Software Mentioned

GST
MATLAB Deep Learning Toolbox
MATLAB
Lumerical FDTD Solutions
COMSOL Multiphysics
COMSOL

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