Precise metrology forms a fundamental basis for advanced science and technology, including bioimaging, semiconductor defects diagnostics, and space telescope observations. However, the sensor technologies used in metrology have so far faced a physical barrier known as the standard quantum limit.

A promising alternative to surpass this limit is the distributed quantum sensor—a technology that links multiple spatially separated sensors into a single, large-scale quantum system, thereby enabling highly precise measurements. To date, efforts have primarily focused on enhancing precision, while the potential for extending this approach to high-resolution imaging has not yet been fully demonstrated.

Dr. Hyang-Tag Lim’s research team at the Center for Quantum Technology, Korea Institute of Science and Technology (KIST), has demonstrated the world’s first ultra-high-resolution distributed quantum sensor network. The study is published in the journal Physical Review Letters.