Preliminary testing of the quantum gravity gradiometer designed by Michael Holynski and colleagues at the University of Birmingham, which has now been shown to locate an underground tunnel with a positional accuracy of 20cm. Credit: Crown Copyright

Underground quantum sensing set to erupt

Susan Curtis explores the new breed of quantum gravimeters finding their way onto the slopes of Mount Etna and into tunnels deep under Birmingham

The DQG is composed of a main sensor head standing at 175cm high, around 66 kg, connected to the ILS system, at around 33kg. The combined system can be operated with a power as little as 200W. Credit: iXblue

iXblue develops commercial quantum sensor for underground mapping

The system can measure simultaneously the absolute values of both gravitational acceleration and its vertical gradient

Canadian start-up Xanadu has built a series of small-scale quantum chips, available in 8- and 12-qubit versions, along with a 24-qubit processor, and a 40-qubit chip now at the fabrication stage. Credit: Xanadu

Quantum computing gets photonics spin

Susan Curtis speaks to start-ups building quantum processors based on the photon

 Quantum gravimeter developed by Muquans

iXblue acquires Kylia and Muquans

iXblue, a high-tech company in the fields of navigation, photonics and space, and maritime autonomy, announces the acquisition of Kylia (optical components and instruments) and Muquans (integrated quantum instruments).

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