Zobrazeno 1 - 10
of 616
pro vyhledávání: '"Hejda, P."'
Autor:
Hejda, Matěj, Marchesin, Federico, Papadimitriou, George, Gizopoulos, Dimitris, Charbonnier, Benoit, Orobtchouk, Régis, Bienstman, Peter, Van Vaerenbergh, Thomas, Pavanello, Fabio
In this work, we discuss our vision for neuromorphic accelerators based on integrated photonics within the framework of the Horizon Europe NEUROPULS project. Augmented integrated photonic architectures that leverage phase-change and III-V materials f
Externí odkaz:
http://arxiv.org/abs/2407.06240
Autor:
Zhang, Weikang, Hejda, Matěj, Al-Taai, Qusay Raghib Ali, Owen-Newns, Dafydd, Romeira, Bruno, Figueiredo, José M. L., Robertson, Joshua, Wasige, Edward, Hurtado, Antonio
We report a multi-modal spiking neuron that allows optical and electronic input and control, and wavelength-multiplexing operation, for use in novel high-speed neuromorphic sensing and computing functionalities. The photonic-electronic neuron is buil
Externí odkaz:
http://arxiv.org/abs/2403.03775
Autor:
Hejda, Matěj, Doris, Eli A., Bilodeau, Simon, Robertson, Joshua, Owen-Newns, Dafydd, Shastri, Bhavin J., Prucnal, Paul R., Hurtado, Antonio
Publikováno v:
Neuromorph. Comput. Eng. 4 (2024) 024011
Spiking neurons and neural networks constitute a fundamental building block for brain-inspired computing, which is posed to benefit significantly from photonic hardware implementations. In this work, we experimentally investigate an interconnected sy
Externí odkaz:
http://arxiv.org/abs/2305.00788
Autor:
Al-Taai, Qusay Raghib Ali, Hejda, Matěj, Zhang, Weikang, Romeira, Bruno, Figueiredo, José M. L., Wasige, Edward, Hurtado, Antonio
This work reports a nanostructure resonant tunnelling diode-photodetector (RTD-PD) device and demonstrates its operation as a controllable, optically-triggered excitable spike generator. The top contact layer of the device is designed with a nanopill
Externí odkaz:
http://arxiv.org/abs/2304.11713
Photonic technologies offer great prospects for novel ultrafast, energy-efficient and hardware-friendly neuromorphic (brain-like) computing platforms. Moreover, neuromorphic photonic approaches based upon ubiquitous, technology-mature and low-cost Ve
Externí odkaz:
http://arxiv.org/abs/2211.12239
Publikováno v:
SoftwareX, Vol 27, Iss , Pp 101778- (2024)
Machine learning and AI remain hot topics in research. However, most machine-learning models are trained and applied to big data. Major electronics parts manufacturers are actively working on simplifying the deployment of machine learning models to t
Externí odkaz:
https://doaj.org/article/f71b661b99ec4c59ac9d65c15d955a34
Autor:
Alessandra Kortz, Martin Hejda, Jan Pergl, Josef Kutlvašr, Petr Petřík, Jiří Sádlo, Michaela Vítková, Martin Vojík, Petr Pyšek
Publikováno v:
NeoBiota, Vol 92, Iss , Pp 29-43 (2024)
Plant invasion science has made a substantial progress in documenting the impacts of aliens, but comparisons with the impacts of native dominants are still rare. Further, the impacts on larger spatial scales remain poorly understood. We recorded the
Externí odkaz:
https://doaj.org/article/a3f6278479ed49b48da5f5082084b605
Autor:
Hejda, Matěj, Malysheva, Ekaterina, Owen-Newns, Dafydd, Al-Taai, Qusay Raghib Ali, Zhang, Weikang, Ortega-Piwonka, Ignacio, Javaloyes, Julien, Wasige, Edward, Dolores-Calzadilla, Victor, Figueiredo, José M. L., Romeira, Bruno, Hurtado, Antonio
Excitable optoelectronic devices represent one of the key building blocks for implementation of artificial spiking neurons in neuromorphic (brain-inspired) photonic systems. This work introduces and experimentally investigates an opto-electro-optical
Externí odkaz:
http://arxiv.org/abs/2206.11044
Vertical-Cavity Surface-Emitting Lasers (VCSELs) are highly promising devices for the construction of neuromorphic photonic information processing systems, due to their numerous desirable properties such as low power consumption, high modulation spee
Externí odkaz:
http://arxiv.org/abs/2208.06347
Publikováno v:
Acta Phys. Pol. B Proc. Suppl. 15, 1-A5 (2022)
The so-called BSW effect is an idealised scenario for high-energy test particle collisions in the vicinity of black holes; if the black hole is extremal and one of the particles fine-tuned, the centre-of-mass collision energy can be arbitrarily high.
Externí odkaz:
http://arxiv.org/abs/2202.13113