Quantum Compass

GPS-free navigation nears reality with quantum breakthrough

Integrated photonic chips enable compact, low-cost quantum navigation

The idea of using quantum technology for navigation isn't exactly novel. The technique relies on sensors called atom interferometers that can track position and motion without any need for GPS satellites. But the problem was that to get the required navigation precision, it had to be monstrously huge to hold six large atom interferometers – big enough to fill an entire room. However, this is changing.

A team at Sandia National Labs has developed ultra-compact optical chips that can power those quantum navigation sensors in a package small enough to stick basically anywhere. It's all about replacing the bulky laser systems normally needed for the atom interferometers with tiny integrated photonic circuits.

The scientists say that reducing dependency on GPS is important because satellite signals can be disrupted or spoofed. This can cause major headaches for military operations or automated transport systems.

By Zo Ahmed August 19, 2024 at 7:29 AM

READ ON...