An international collaboration, led by Macquarie University scientists, has introduced a new quantum optics technique that can provide unprecedented access to the fundamental properties of light-matter interactions in semiconductors.
The research, published Jan. 15 in the journal Nature Physics, uses a novel spectroscopic technique to explore interactions between photons and electrons at the quantum scale.
Professor Thomas Volz, co-author of the study and research group leader at Macquarie University's School of Mathematical and Physical Sciences, says the work has the potential to drive a breakthrough in the global quest for accessible quantum photonic technologies.
"We have developed a new technique that uses the radiative quantum cascade, where photons stored in a material journey down a ladder of energy levels generated when light and matter interact," says Professor Volz.
"This applies even when the interactions are so weak that the resulting energy levels involved were previously too close to distinguish."
This ability to peer closer into the quantum realm holds immense potential.
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