Journal
NATURE COMMUNICATIONS
Volume 3, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms1984
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Funding
- Air Force Office of Scientific Research [FA-9550-10-1-0026]
- National Science Foundation [EECS-0846466]
- European Research Council [ERC247330]
- Spanish Ministry of Science and Innovation [CSD2007-046]
- ICREA Funding Source: Custom
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0846466] Funding Source: National Science Foundation
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Tremendous advances in the study of magnetic light-matter interactions have recently been achieved using man-made nanostructures that exhibit and exploit an optical magnetic response. However, naturally occurring emitters can also exhibit magnetic resonances in the form of optical-frequency magnetic-dipole transitions. Here we quantify the magnetic nature of light emission using energy-and momentum-resolved spectroscopy, and leverage a pair of spectrally close electric-and magnetic-dipole transitions in trivalent europium to probe vacuum fluctuations in the electric and magnetic fields at the nanometre scale. These results reveal a new tool for nano-optics: an atomic-size quantum emitter that interacts with the magnetic component of light.
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