EP 105 — Delta.g's Tony Lowe on Taking Quantum Gravity Sensing From Lab to Field

Delta.g built a quantum gravity gradiometer that detects underground voids, tunnels, and buried targets in 200 milliseconds per reading, a capability conventional gravity sensors cannot match. Legacy tools are so sensitive to environmental noise that they require extended settling time to separate signal from background, and even then the gravitational reading can be indistinguishable from interference. Delta.g's solution is gradiometry: two stacked identical quantum gravimeters, both built on rubidium atoms cooled to as cold as space, registering the same environmental noise simultaneously.

Bring the readings together, cancel the shared noise, and what remains is the gravity signal. CEO Tony Lowe explains why the same sensor that maps what's underground can navigate without GPS, and walks through the operational architecture behind commercializing a 10-year, £20 million University of Birmingham research program: how to move from a three-person academic founding team to a 15-person cross-functional company, and how the "Mechanical Turk" deployment model lets an early-stage deep tech company put real data in front of paying customers before full automation is ready.

Topics discussed:

• How quantum gravity gradiometry cancels environmental noise to detect underground voids and tunnels in real time
• Why conventional gravity sensors fail in operational environments and how Delta.g's dual-sensor design eliminates the signal-to-noise
• The dual-use case for quantum sensing: underground void detection for defense and civil engineering plus GPS-independent navigation for subsurface platforms
• How Delta.g structured a £4.6 million (~$6.5M) seed round with UK National Security Strategic Investment Fund participation while still at TRL 6
• The "Mechanical Turk" deployment model for early-stage deep tech: manually operating the system on customer sites to prove value before building full operational scale
• Why technology is not the product, and how Delta.g's first key hire is bridging the gap from prototype to deployable system
• Building sovereign and secure supply chains at fewer than 10 employees using an Arena PLM system
• Scaling team and process discipline in deep tech startups: when to hire versus when to fix the process
• How to use the "I intend to" leadership model to push decisions to the right level

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