Researchers have developed a new laser system to help make motion sensors more sensitive and fit in a shoebox, potentially mass-produce. Atom interferometers rely on quantum superposition effects and could revolutionize GPS-free navigation. Quantum sensors capitalize on the fragility of quantum effects to respond to the slightest disturbances in the environment. An innovative silicon photonic modulator can miniaturize a quantum sensor to the size of a shoebox or smaller. The device reduces sidebands by 47.8 decibels, significantly improving sensor performance and potentially reducing costs. While not yet matching laboratory standards, researchers continue to make progress in this groundbreaking technology.
https://spectrum.ieee.org/alternative-for-gps