Journal
NATURE COMMUNICATIONS
Volume 4, Issue -, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/ncomms3882
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Funding
- Laboratory Directed Research and Development program at Sandia National Laboratories
- US Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
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The interaction between cavity modes and optical transitions leads to new coupled light-matter states in which the energy is periodically exchanged between the matter states and the optical mode. Here we present experimental evidence of optical strong coupling between modes of individual sub-wavelength metamaterial nanocavities and engineered optical transitions in semiconductor heterostructures. We show that this behaviour is generic by extending the results from the mid-infrared (similar to 10 mu m) to the near-infrared (similar to 1.5 mu m). Using mid-infrared structures, we demonstrate that the light-matter coupling occurs at the single resonator level and with extremely small interaction volumes. We calculate a mode volume of 4.9 x 10(-4) (lambda/n)(3) from which we infer that only similar to 2,400 electrons per resonator participate in this energy exchange process.
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