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Neuromorphic Computing using QD-Networks

Schematic representation of reservoir computing based on an optical network.

The main objective of this project is to implement Reservoir Computing (RC, a neuro-inspired information processing scheme) in an optical network of nano-structures. Its realization requires spectrally tailored quantum dot micropillar arrays (QDMPA) and diffractive coupling to establish all-optical networks including hundreds of such emitters. Our underlying interdisciplinary approach combines three recent concepts by bridging nanostructures to a macroscopic complex system which is utilized for powerful computation. Namely, these concepts are RC as the functional concept, QDMPAs as the hardware platform, and diffractive coupling schemes for scalable optical networks to implement the complex neuro-inspired systems, capable of ultra-high speed information processing. It represents a unique opportunity to integrate these three concepts into a fully functional computing system with great potential in terms of performance, speed, compactness, energy-efficiency and future extensions to quantum machine learning.


More information: http://neuroqnet.com/



Dr. Daniel Brunner, Department of Optics, FEMTO-ST, Besançon, France

Funded by:

Volkswagen Stiftung


A. Kaganskiy et al., Micropillar lasers with site-controlled quantum dots as active medium, Optica, OSA, 2019, 6, 404-409 (2019)

T. Heuser et al., Fabrication of dense diameter-tuned quantum dot micropillar arrays for applications in photonic information processing, APL Photonics 3, 116103 (2018)

A. Kaganskiy et al., Micropillars with a controlled number of site-controlled quantum dots, Applied Physics Letters 112, 071101 (2018)

A. Kaganskiy et al., Enhancing the photon-extraction efficiency of site-controlled quantum dots by deterministically fabricated microlenses, Optics Communications, 418, 162-166 (2018)

M. Strauß et al., Resonance fluorescence of a site-controlled quantum dot realized by the buriedstressor growth technique, Appl. Phys. Lett. 110, 111101 (2017)


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