Northrop Grumman Tested Quantum Navigation System
The navigation tech was successfully flight-tested using a drone to operate without relying on external GPS signals.
Updated on Sept. 20, 2026 in Quantum Computing
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Northrop Grumman and SandboxAQ have flight-tested a new quantum navigation system called AQNav. The technology allows for precise location tracking by measuring variations in Earth's magnetic field without needing GPS.
Why it matters
The system provides a vital navigation alternative for aircraft in contested environments where GPS signals are jammed, spoofed, or otherwise unavailable. By operating at room temperature, it removes the need for complex cooling systems typically required by quantum sensors.
The AQNav system utilizes an Optically Pumped Magnetometer that detects magnetic field strength as low as 10⁻¹⁵ Teslas. The hardware was tested on a Lumberjack drone with an empty weight of 79 lb and a max takeoff weight of 290 lb.
The players
Northrop Grumman
A global aerospace and defense technology company that provides advanced systems and solutions for government and commercial customers.
SandboxAQ
An enterprise SaaS company focused on artificial intelligence and quantum computing applications.
The details
The technology functions by using an AI model to match magnetic field measurements against a database while measuring the atomic wobble of alkali atoms aligned by a polarized laser. This process allows the drone to maintain its position autonomously without any external signal reliance.
Timeline
September 20, 2026: The development and testing news was published.
The Tech Race
This development represents a major shift toward replacing reliance on the Global Positioning System with self-contained quantum hardware. It positions Northrop Grumman at the forefront of a technological arms race to secure critical navigation infrastructure against electronic warfare.
For developers and users of drone technology, this advancement could eventually eliminate dependence on satellite connectivity for precise flight paths. It signals a move toward more resilient unmanned aerial systems that can maintain operational capability even during widespread signal interference.
The takeaway
Quantum navigation enables greater autonomy for aircraft by utilizing inherent magnetic signatures rather than external broadcast signals. This technology demonstrates how quantum sensors can be downsized to fit on lightweight airframes at a lower cost than previously thought possible.
Further reading
Learn more about the latest innovations in Quantum Computing.
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