Quantum compass testing on London Underground aims to replace GPS with precise quantum sensors.

A "quantum compass" is being tested on the London Underground, with the aim of replacing GPS. Scientist Dr Joseph Cotter uses a stainless steel vacuum chamber, atoms of rubidium, and lasers to cool his equipment to near-absolute zero in real-life settings. The research is developing precise sensors using quantum mechanics to accurately pinpoint locations, potentially leading to a new generation of underground and underwater sensors.

June 15, 2024
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