Researchers develop unique process for producing light-matter mixture

 In groundbreaking new research, an international team of researchers led by the University of Minnesota Twin Cities has developed a unique process for producing a quantum state that is part light and part matter.

The discovery provides fundamental new insights for more efficiently developing the next generation of quantum-based optical and electronic devices. The research could also have an impact on increasing efficiency of nanoscale chemical reactions.

Quantum science studies natural phenomena of light and matter at the smallest scales. In this study, the researchers developed a unique process in which they achieved "ultrastrong coupling" between infrared light (photons) and matter (atomic vibrations) by trapping light in tiny, annular holes in a thin layer of gold. These holes were as small as two nanometers, or approximately 25,000 times smaller than the width of a human hair.

These nanocavities, similar to a highly scaled-down version of the coaxial cables that are used to send electrical signals (like the cable that comes into your TV), were filled with silicon dioxide, which is essentially the same as window glass. Unique fabrication methods, based on techniques developed in the computer-chip industry, make it possible to produce millions of these cavities simultaneously, with all of them simultaneously exhibiting this information technology vs computer science photon-vibration coupling.

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