Dirac Labs raises $1.8M to build quantum navigation for GPS-denied environments

Dirac Labs has raised $1.8 million in pre-seed funding to prototype quantum sensors and run field trials for underwater, underground and other GPS-challenged environments. The Madison startup is building a universal positioning system for defense and commercial platforms using diamond-based sensing, AI and semiconductor-style manufacturing.

Why it matters: - Dirac Labs is targeting a real gap in navigation where GPS cannot reach, including underwater, underground and other contested environments. - The company is aiming at defense, industrial and commercial platforms that need reliable positioning without satellite signals. - The funding is intended to help move quantum sensing from lab research toward deployable hardware.

What happened: - Dirac Labs announced $1.8 million in pre-seed funding on August 20, 2026. - The Madison, Wisconsin-based company will use the money to prototype its quantum sensors and conduct field trials. - TitletownTech participated in the round alongside Automotive Ventures, Riceberg Ventures, quantumEDGE Ventures, Jude Gomila and Balaji Srinivasan. - TitletownTech is a venture firm formed through a partnership between Microsoft and the NFL’s Green Bay Packers.

The details: - Dirac Labs is building a diamond-based sensing platform that measures Earth’s magnetic field with high precision. - The system combines quantum sensing with AI models for real-time signal processing and sensor fusion. - The company says the approach can turn faint magnetic signals into precise positioning data and remain resilient as conditions change. - The hardware is designed to plug into existing GPS device ports on airplanes, submarines and other vehicles without re-engineering the platforms. - Dirac Labs says the sensors are built to use existing semiconductor foundry infrastructure, which is intended to lower cost and improve scale. - The company says small, robust sensors are key to overcoming the main deployment barrier for quantum sensing. - Dirac Labs has also received non-dilutive public funding from the Indo-U.S. Science and Technology Forum. - The company participated in gener8tor’s Great Lakes Innovation Accelerator, part of NOAA’s Ocean Enterprise Accelerators program. - Additional support came from the Wisconsin Entrepreneurship Hub through a collaborative project with the University of Wisconsin-Madison. - Dirac Labs was spun out of the University of Wisconsin-Madison in 2025 after co-founder Sanket Deshpande’s Ph.D. defense focused on making quantum technologies robust enough for field use. - Co-founder and COO Aishwarya Das has a background in physics and machine learning. - Dirac Labs lists early traction with major defense and industrial partners as validation of near-term demand. - The company’s website is available here.

Between the lines: - The round mixes venture capital with public and university-linked support, which suggests the company is trying to bridge deep-tech research and commercial deployment. - The pitch centers on manufacturability as much as sensing performance, a sign that scale and cost are central to the business model. - Dirac Labs is positioning quantum navigation not as a replacement for GPS everywhere, but as a backup layer for places where GPS is unreliable or unavailable. - The advisor comments point to defense, ocean economy and autonomy use cases as the fastest path to adoption.

What's next: - Dirac Labs plans to prototype its sensors and test them in the field to refine performance. - The company is working toward broader deployment on defense and commercial platforms that operate in GPS-denied environments. - Dirac Labs says its longer-term goal is a universal positioning system for everywhere GPS cannot reach.

The bottom line: - Dirac Labs is betting that quantum sensing, paired with AI and scalable manufacturing, can become a practical navigation layer for subsurface and other hard-to-map environments.