Exciton–polariton condensates for photonic spiking neurons

Barbara Pietka; Krzysztof Tyszka; Magdalena Furman; Andrzej Opala; Rafal Mirek; Mateusz Król; Jan Suffczynski; Wojciech Pacuski; Jacek Szczytko; Michal Matuszewski

doi:10.1117/12.3023211

20 June 2024 Exciton–polariton condensates for photonic spiking neurons

Barbara Pietka, Krzysztof Tyszka, Magdalena Furman, Andrzej Opala, Rafal Mirek, Mateusz Król, Jan Suffczynski, Wojciech Pacuski, Jacek Szczytko, Michal Matuszewski

Author Affiliations +

Proceedings Volume PC13004, Nonlinear Optics and its Applications 2024; PC130040B (2024) https://doi.org/10.1117/12.3023211
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Spiking neural networks are a class of artificial neural networks maintaining a strict analogy to brain-like processing. I’ll show a new hardware approach in which semiconductor microcavities in strong light-matter coupling regime can operate as optical spiking neurons. We demonstrated the intrinsic property of exciton-polaritons to resemble the Leaky Integrate-and-Fire spiking mechanism. Polaritons when pumped with a pulsed laser exhibit leaky-integration due to relaxation of the excitonic reservoir, threshold-and-fire mechanism due to transition to polariton condensate, and resetting due to stimulated emission of photons. Our approach provides means for energy-efficient ultrafast processing of spike-like laser pulses at the level below 1 pJ/spike.

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Barbara Pietka, Krzysztof Tyszka, Magdalena Furman, Andrzej Opala, Rafal Mirek, Mateusz Król, Jan Suffczynski, Wojciech Pacuski, Jacek Szczytko, and Michal Matuszewski "Exciton–polariton condensates for photonic spiking neurons", Proc. SPIE PC13004, Nonlinear Optics and its Applications 2024, PC130040B (20 June 2024); https://doi.org/10.1117/12.3023211

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