About
Dr. Mitchell Nahmias is the CTO and co-founder of Sphere Semi, where he leads the technical effort to use AI models to generate, evaluate, and optimize custom analog and RF chip designs. He previously co-founded Luminous Computing in 2018 (with Marcus Gomez) and served as its CTO, building a photonic AI accelerator company that raised over $126M including a $105M Series A. Nahmias earned his BS, MA, and PhD in Electrical Engineering from Princeton University, where he was an NSF Graduate Research Fellow and helped establish the mathematical foundations of neuromorphic photonics, studying the relationship between lasers and biological spiking neurons. He is a contributing author of the textbook Principles of Neuromorphic Photonics and a co-author with Lukas Chrostowski of a widely used silicon photonics textbook, with more than 70 papers and patents and over 14,000 citations.
Previous roles
- Co-founder & CTO, Luminous Computing
- Graduate Researcher, Princeton University (Lightwave Lab)
Notable work
- Developed an excitable photonic-neuron architecture at Princeton and continued the work as an NSF Graduate Research Fellow in electrical engineering.
- Co-authored the 2018 review 'Neuromorphic Photonics,' surveying photonic approaches to neuron-like information processing.
- Co-authored 'Photonic Multiply-Accumulate Operations for Neural Networks,' analyzing photonic hardware for neural-network computation.
- Co-founded Sphere Semi and helped build its end-to-end AI chip-design engine; one of the company's AI-designed RF chips was integrated into military hardware through a collaboration with Northrop Grumman.
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