Similar to how a radio antenna plucks a broadcast from the air and concentrates the energy into a song, individual atoms can collect and concentrate the energy of light into a strong, localized signal that researchers can use to study the fundamental building blocks of matter.
"It's not just a breakthrough in technology. It's also a breakthrough in fundamental physics," said PME PhD candidate Zixi Li, co-first author on the paper."While it's well-known that an excited atomic dipole can generate a near-filed with huge intensity, no one has ever demonstrated this in an experiment before."The core feature of an optical antenna is that it creates an oscillating electronic dipole when excited at resonance.
"Something that's been observed for the last seven or eight years is that certain types of color centers can be immune to these environmental effects," High said. "The collaboration between theory, computation and experiments initiated by Alex High not only contributed to understanding and interpreting the core science, but also opened new lines of research on the computational side," said PME Liew Family Prof. Guilia Galli, a co-author on the paper."The collaboration has been extremely fruitful.
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Fonte: physorg_com - 🏆 388. / 55 Consulte Mais informação »