120 citations · 260 across the 9 of their papers we have counts for
9 papers
Optically-triggered deterministic spiking regimes in nanostructure resonant tunnelling diode-photodetectors
Qusay Raghib Ali Al-Taai, Matěj Hejda, Weikang Zhang +4
This work reports a nanostructure resonant tunnelling diode-photodetector (RTD-PD) device and demonstrates its operation as a controllable, optically-triggered excitable spike gene…
Surface Passivation of III-V GaAs Nanopillars by Low Frequency Plasma Deposition of Silicon Nitride for Active Nanophotonic Devices
Bejoys Jacob, Filipe Camarneiro, Jérôme Borme +3
Numerous efforts have been devoted to improve the electronic and optical properties of III-V compound materials via reduction of their nonradiative states, aiming at highly-efficie…
Artificial optoelectronic spiking neuron based on a resonant tunnelling diode coupled to a vertical cavity surface emitting laser
Matěj Hejda, Ekaterina Malysheva, Dafydd Owen-Newns +9
Excitable optoelectronic devices represent one of the key building blocks for implementation of artificial spiking neurons in neuromorphic (brain-inspired) photonic systems. This w…
Resonant tunnelling diode nano-optoelectronic spiking nodes for neuromorphic information processing
Matěj Hejda, Juan Arturo Alanis, Ignacio Ortega-Piwonka +5
In this work, we introduce an optoelectronic spiking artificial neuron capable of operating at ultrafast rates ( 100 ps/optical spike) and with low energy consumption (…
Bursting and excitability in neuromorphic resonant tunneling diodes
Ignacio Ortega, Oreste Piro, Bruno Romeira +1
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 R…
The physical limits of nanoLEDs and nanolasers for optical communications
Bruno Romeira, Andrea Fiore
Nanoscale light sources are being intensively investigated for their potential to enable low-energy, high-density optical communication and sensing systems. Both nano-light-emittin…
Purcell Effect in the Stimulated and Spontaneous Emission Rates of Nanoscale Semiconductor Lasers
Bruno Romeira, Andrea Fiore
Nanoscale semiconductor lasers have been developed recently using either metal, metallo-dielectric or photonic crystal nanocavities. While the technology of nanolasers is steadily…
Delay dynamics of neuromorphic optoelectronic nanoscale resonators: Perspectives and applications
B. Romeira, J. M. L. Figueiredo, J. Javaloyes
With the recent exponential growth of applications using artificial intelligence (AI), the development of efficient and ultrafast brain-like (neuromorphic) systems is crucial for f…
Regenerative memory in time-delayed neuromorphic photonic systems
B. Romeira, R. Avó, José M. L. Figueiredo +2
We investigate a regenerative memory based upon a time-delayed neuromorphic photonic oscillator and discuss the link with temporal localized structures. Our experimental implementa…