By measuring acceleration and gravity directly from atomic motion using cold-atom interferometry, these sensors deliver absolute, drift-free performance, eliminating bias and bias-drift errors. These quantum sensors enable long-duration, high-accuracy navigation for applications such as autonomous vehicles, aerospace systems, defence platforms, and underground or subsea operations, where traditional accelerometers rapidly accumulate error. This reduces positional uncertainty and extends operational capability of inertial navigation systems (INS).Our quantum sensors have several applications: (1) Aerospace and Aviation: Quantum inertial sensors provide continuous, high-accuracy navigation in GPS-denied, jammed, or unavailable environments, minimizing positional uncertainty. (2) Defence and Strategic Systems: Quantum inertial navigation provides resilient, tamper-proof positioning for defence systems operating in contested or denied environments. (3) Subsea and Underground Navigation: in environments where satellite signals cannot penetrate, quantum accelerometers maintain accurate positional awareness over long missions. They eliminate cumulative drift errors typical of classical inertial measurement units (IMUs). (4) ISR and Covert Mapping: Passive detection and gravity-based mapping of subterranean infrastructure enhance ISR capabilities in challenging environment, without emitting detectable signals.
