Atomic Chains Turn Electric Fields into Measurable Quantum Signals

Researchers at Nanyang Technological University developed a Rydberg-atom chain method to sense low-frequency vector electric fields.

An external field shifts the atomic quantization axis and alters angle-dependent dipolar exchange among atoms.

The team uses excitation arrival time, Ramsey spectra, and frequency-domain transmission to encode field strength and direction.

The approach aims to enable traceable, micrometer-scale, directionally sensitive, compact electric-field sensors.