Writer: Jordan Sprogis
Editor: Lillian Castro
Reviewer: Cristian Lopez
Key Takeaways
- Lumai’s optical computing uses light instead of electrons to speed up AI workloads, delivering up to 50x faster performance and 90% less energy use compared to traditional GPUs.
- Photon technology gives data centers a chance to cut power use, especially as more leaders realize the need for greener operations — something that’s becoming even more important with rising regulations.
Lumai, a University of Oxford spinout, raised $10 million to commercialize its optical computing technology, aimed to improve the speed and efficiency of AI processing in data centers.
Based in the UK, originated from research at Oxford and is now backed by several investors, including Constructor Capital, IP Group, and PhotonVentures.
Here’s how it works: Lumai’s optical computing uses light (photons) instead of electricity (electrons) to perform the complex multiplications involved in AI processing.
The tech is built on 3D free-space optics, which is where Lumai’s tech uses the properties of beams of light moving in 3D space to perform calculations.
Dr. Serg Bell, Founder and Chairman of Constructor Capital, explained the science that goes on behind the scenes.
“Lumai’s technology is a significant step forward in improving matrix multiplication, similar to the advancements quantum computers offer for other computational scenarios,” he said.
The result: Lumai’s technology promises up to 50x faster performance, 90% less energy consumption, and a smaller physical footprint compared to conventional GPUs.
“The cost of current LLMs is unsustainable, and next-generation AI won’t happen without a major shift,” said Tim Weil, CEO and co-founder at Lumai.
With data center power consumption projected to triple by 2028 — 12% of the U.S. power supply — Lumai’s tech could be the paradigm shift that AI infrastructure needs.
“Lumai’s innovative optical computing design overcomes the scalability challenges that have held others back and dramatically reduces power consumption, which will drive down the cost of AI.”
Rethinking the Data Center Model
As AI computing accelerates, so do its environmental and societal impacts.
Sustainability is becoming a top priority for data center providers — especially since a single data center consumes more electricity than 750,000 homes put together.
But there’s some good news: Uptime Institute found that 30% of data center operators are prioritizing energy efficiency in IT equipment.
The report also notes that while newly built data centers achieve PUE ratings of 1.3 or better, older facilities struggle to keep up without major upgrades.
Dr. Bell warned that traditional energy sources may not be able to sustain the “next generation of humanity’s neocortex.”
“Fossil fuels are a byproduct of evolution, but they may not generate enough energy to create a better model if we continue using electron-based computation,” he said.
Dr. Bell is clear: “Photons are the only known choice.”
Though commercialization timelines are unclear, the news of Lumai’s breakthrough offers data center providers the chance to explore early implementation.
Early adopters could gain a major technical advantage by offering infrastructure that can support both faster workloads and greener operations, two growing issues in tech.
Investors, including Dr. Lee Thornton of IP Group, are watching closely, positioning Lumai as the bellwether for broader adoption of photon-based computing.
“Having solved the challenges of optical compute to provide a low-cost, scalable solution, Lumai’s technology has the potential to transform the future of AI,” said Dr. Thornton.
“We are proud to continue supporting Lumai as it embarks on the next phase of its journey.”
