Lightmatter, the leader in photonics, announced that it raised a $154 million Series C investment round from SIP Global, Fidelity Management & Research Company, Viking Global Investors, GV (Google Ventures), HPE Pathfinder and existing investors. With this round, Lightmatter has raised a total of over $270 million to date. The company will leverage this new financing to arm some of the largest cloud providers, semiconductor companies, and enterprises with the power of photonic technology to bring a new level of performance and energy savings to the most advanced AI and HPC workloads.