PALO ALTO, Calif., Sept. 29, 2025 — Nanofiber Quantum Technologies, Inc. (NanoQT), a developer of infrastructure for quantum computing technology, has closed $14 million in series A financing. The company is building ultra-low-loss nanofiber cavity-quantum electrodynamic interconnects for quantum processors. The round follows more than $20 million in earned government R&D grants across Japan and the U.S. to support NanoQT’s roadmap.

Quantum interconnects are an essential technology for modularizing quantum processors (QPUs), as well as for extending them into networked and communication-enabled systems. NanoQT’s approach is an ultralow-loss nanofiber cavity that functions as an end-to-end fiber-optic interconnect. The solution enables extremely efficient conversion of qubit signals into photonic signals-a capability fundamentally grounded in cavity quantum electrodynamics.

NanoQT’s initial product is highly engineered for neutral-atom QPUs. NanoQT’s interconnect architecture aims to provide a path beyond theper-unit scalability limits that neutral-atom processors are projected to face. At the same time, NanoQT said, the solution also positions the company to address the emerging quantum repeater market.

The company additionally plans to use its earned proceeds to expand its engineering and manufacturing capacity in College Park, Md. and Tokyo, and demonstrate a distributed quantum computing system using its interconnect technology and standard fiber links.