Quantum ‘translator’: A tiny silicon chip links microwaves and light like never before

Researchers at the University of British Columbia have developed a tiny silicon chip that acts as a highly efficient quantum "translator," converting signals between microwaves (used in quantum computing) and light (used in communication) with up to 95% efficiency and almost zero noise. This conversion is crucial because microwaves, while integral to quantum computers, cannot travel long distances effectively, whereas optical photons can. The chip achieves this by incorporating tiny magnetic defects in silicon that trap electrons; these electrons flip states to mediate the conversion without absorbing energy, preserving the fragile quantum information and entanglement necessary for quantum communication. This innovation addresses a major challenge in creating a quantum internet, enabling quantum computers to remain entangled over long distances, potentially across cities or continents. Unlike previous devices, the UBC chip works bidirectionally, adds minimal noise, and operates with extremely low power consumption using superconducting materials. While still theoretical and requiring physical realization, this design represents a significant advance toward secure, ultra-fast quantum networks that