It’s like a hall of mirrors for a molecule, only spaced a hundred thousand times thinner than a human hair.
- Jeremy Baumberg
When a molecule emits a blink of light, it doesn’t expect it to ever come back. However researchers have now managed to place single molecules in such a tiny optical cavity that emitted photons, or particles of light, return to the molecule before they have properly left. The energy oscillates back and forth between light and molecule, resulting in a complete mixing of the two.
Previous attempts to mix molecules with light have been complex to produce and only achievable at very low temperatures, but the researchers, led by the University of Cambridge, have developed a method to produce these ‘half-light’ molecules at room temperature.
These unusual interactions of molecules with light provide new ways to manipulate the physical and chemical properties of matter, and could be used to process quantum information, aid in the understanding of complex processes at work in photosynthesis, or even manipulate the chemical bonds between atoms. The results are reported in the journal Nature.
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Image: Mixing light with dye molecules, trapped in golden gaps
Credit: Yi Ju/University of Cambridge NanoPhotonics
Reproduced courtesy of the University of Cambridge
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