Nicholas Harris, Co-founder & CEO at Lightmatter
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AI
Not Publicly Disclosed/mo
Not Publicly Disclosed ARR

Nicholas HarrisCo-founder & CEO

In this interview, Lightmatter co-founder and CEO Nicholas Harris explains how the company evolved from photonic computing to silicon photonics for AI networking. He discusses why data movement has become the primary bottleneck in modern AI infrastructure, how Lightmatter is scaling production with hyperscalers and chip companies, and why photonic interconnects will become the foundation of next-generation AI data centers powered by light rather than copper.

Nicholas Harris

Nicholas Harris

Co-founder & CEO

Lightmatter

Lightmatter

Founder Stats

  • AI
  • Started 2017
  • Not Publicly Disclosed/mo
  • 200+ team
  • Mountain View, California, USA

About Nicholas Harris

Nicholas Harris is the co-founder and CEO of Lightmatter, a silicon photonics company developing optical interconnect technology for AI infrastructure. A PhD graduate from MIT, Harris has spent his career advancing programmable photonics and high-performance computing. Under his leadership, Lightmatter has become one of the leading companies enabling next-generation AI data centers through photonic networking technologies and is now part of NVIDIA's NVLink Fusion ecosystem.

Interview

July 8, 2026

Q

What inspired you to start Lightmatter?

Question 1 of 12
Nicholas Harris

Lightmatter was founded in 2017 after recognizing that Moore's Law and Dennard scaling were no longer delivering the improvements needed for future computing. The original vision was to accelerate AI computation using light instead of electrical signals.

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Q

Why did the company shift from photonic computing to photonic interconnect?

Question 2 of 12
Nicholas Harris

As transformer-based AI models became dominant, the main challenge moved from computation to moving massive amounts of data efficiently. The company pivoted toward solving networking bottlenecks with silicon photonics.

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Q

What is the company's biggest priority today?

Question 3 of 12
Nicholas Harris

The immediate priority is delivering production chips for customers while scaling manufacturing and preparing silicon photonics for high-volume deployment.

0
Q

What makes manufacturing photonic chips especially challenging?

Question 4 of 12
Nicholas Harris

Unlike conventional semiconductors, photonic chips combine optical and electronic components. Testing and validating both systems simultaneously requires entirely new manufacturing processes.

0
Q

Why is light attractive for AI computing?

Question 5 of 12
Nicholas Harris

The physical behavior of light naturally performs mathematical operations like addition and multiplication, which are fundamental to neural networks. This enables significantly lower energy consumption compared to traditional electronics.

0
Q

Why is networking becoming more important than compute?

Question 6 of 12
Nicholas Harris

Modern AI systems rely on thousands of processors working together. Efficient communication between chips is now as important as the chips themselves, making networking a critical performance bottleneck.

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Q

Who are Lightmatter's customers?

Question 7 of 12
Nicholas Harris

The company works with hyperscale cloud providers, GPU manufacturers, and custom AI chip developers that need advanced optical interconnect technology for large AI clusters.

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Q

What is the Passage platform?

Question 8 of 12
Nicholas Harris

Passage is Lightmatter's photonic interconnect platform that integrates optics directly into AI hardware, enabling processors to communicate at extremely high bandwidth.

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Q

What is a scale-up domain?

Question 9 of 12
Nicholas Harris

A scale-up domain is a tightly connected group of AI processors that communicate fast enough to function almost like a single chip, improving training and inference performance.

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Q

Why are lasers important to the platform?

Question 10 of 12
Nicholas Harris

Photonic communication depends on laser technology. Lightmatter's GUIDE laser platform provides the optical source required for high-speed photonic links.

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Q

How do AI data centers influence Lightmatter's roadmap?

Question 11 of 12
Nicholas Harris

As AI clusters continue growing, networking consumes an increasing share of system cost and power. Photonic networking becomes increasingly valuable as systems scale.

0
Q

Where does Nicholas Harris see the company in the next three years?

Question 12 of 12
Nicholas Harris

He expects silicon photonics to become mainstream inside AI infrastructure, with many leading AI models running on systems connected by Lightmatter's optical technology.

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