Communications of the ACM
Researchers Image Quasiparticles That Could Lead to Faster Circuits, Higher Bandwidths
Researchers at Iowa State University have, for the first time, used spectroscopic studies to record exciton-polaritons as resonance peaks or dips in optical spectra at room temperature.
Credit: Zhe Fei
Researchers at Iowa State University have for the first time used spectroscopic studies to record exciton-polaritons as resonance peaks or dips in optical spectra at room temperature.
"We are the first to show a picture of these quasiparticles and how they propagate, interfere, and emit," says Iowa State professor Zhe Fei.
He notes the generation of exciton-polaritons at room temperature and their propagation characteristics are significant for developing future applications for the quasiparticles.
Fei says the technology could be used to build nanophotonic circuits to replace electronic circuits for nanoscale energy or information transfer.
He thinks the large bandwidth associated with nanophotonic circuits could be as much as 1 million times faster than current electrical circuits.
The researchers found they could manipulate the properties of the exciton-polaritons by changing the thickness of the molybdenum diselenide semiconductor.
"We need to explore further the physics of exciton-polaritons and how these quasiparticles can be manipulated," Fei says.
From Iowa State University News Service
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