Quantum-Assured Navigation Demonstrated Aboard Australian Navy Vessel

Q-CTRL has successfully demonstrated quantum-assured navigation at sea, showcasing a software-enhanced gravimeter that operates autonomously without GPS during real naval missions By Joseph Macey / 17 Jul 2025

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Quantum-Assured Navigation Demonstrated Aboard Australian Navy Vessel
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Q-CTRL has made advancements in software-ruggedized quantum sensing for navigation in a field trial with Australian Defence on board the Royal Australian Navy’s Multi-role Aviation Training Vessel (MATV), MV Sycamore.

According to Q-CTRL, the results of this maritime trial reinforce its leadership in the development and deployment of quantum-assured navigation solutions, now expanding into maritime operations.

In these trials, Q-CTRL field deployed a quantum dual gravimeter, which measures tiny variations in Earth’s gravity as part of a next-generation quantum-assured positioning, navigation, and timing (PNT) system operable when GPS is unavailable or untrusted.

This first trial saw over 144 hours of continuous operation and successful data collection with no human intervention during real maritime operations.

Q-CTRL CEO and Founder, Michael J. Biercuk, said, “Quantum sensors provide a near-term opportunity to achieve transformational defense capabilities, but previous deployments in the field have struggled to deliver defense-relevant performance. Operating on a real moving vehicle is just not the same as conducting a science experiment; at Q-CTRL, we’ve taken a different approach to getting quantum sensors out of the lab, focusing on software as the critical enabler of performance in the real world.”

Earlier this year, Q-CTRL announced successful airborne field trials of a new generation of quantum-magnetic navigation solutions, Ironstone Opal, validated for the first time to outperform comparable conventional alternatives in challenging real-world settings by 50x.

The newly announced trials of Q-CTRL’s gravimetric navigation technology now open opportunities to bring quantum-assured navigation to maritime vessels where magnetic navigation can be less effective.

GPS denial has become one of the most pressing strategic challenges in both defense and commercial settings, risking major disruptions to civilian and military operations. Quantum navigation promises a robust and reliable GPS backup that cannot be jammed or spoofed.

Jean-Francois Bobier, Partner & Vice President, Deep Tech, at the Boston Consulting Group, said, “We expect the quantum sensing market to reach $3bn-5bn by 2030. Especially amid heightened cases of GPS denial, field-validated quantum sensors are more important than ever for navigational safety. With clear use cases and early adopters in the defense industry, Q-CTRL’s achievements pave the way for future economies of scale and broader adoption.”

In quantum gravimetric navigation, the quantum gravimeter continuously “sees” the otherwise invisible hills and valleys in Earth’s gravity, allowing a navigation computer to compare its observations against known gravity maps. This is similar to orienteering, where one can position oneself on a map by identifying landmarks like valleys, mountains, rivers, or roads. GPS is not needed, making it a robust backup in contested regions.

Q-CTRL’s demonstration with the Royal Australian Navy departs from most previous quantum sensing field trials in that these tests mandated peak performance with full autonomy and without the addition of any special infrastructure. The sensor had to operate just as a real navigation system would operate during a defense mission.

Developed and successfully fielded in just 14 months, the dual gravimeter was installed in a “strapdown” configuration (bolted to the floor) in the space of a single server rack in a communications room onboard MV Sycamore. The sensor consumed only 180W of power, about 10 times less than a household toaster, setting a record for SWaP (size, weight, and power).

Moreover, in this trial, the ship’s motion and engine vibrations were sufficient to cause total loss of signal using conventional operating techniques typically employed in research experiments. To address these losses, Q-CTRL’s unique software-ruggedization strategies recovered operation at near world-record levels even while MV Sycamore was underway, allowing the team to outpace international competitors interested in similar technology.

Posted by Joseph Macey Joseph Macey is a Content Specialist at Defense Advancement, where he has focused on emerging defense technologies since joining in 2022. His expertise spans tactical UAS, rugged computing, and Satellite Communication Systems. After graduating in Journalism from Falmouth University, Joseph began his career in 2019 as a local reporter. His journalism background enhances both his reporting and interview skills, enabling him to provide insightful, authoritative analysis of the latest trends shaping the defense industry. Connect
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