Accelerated single photon emission from dye molecule-driven nanoantennas assembled on DNA

Mickaël P. Busson, Brice Rolly, Brian Stout, Nicolas Bonod and Sébastien Bidault ()
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Mickaël P. Busson: Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, INSERM U979
Brice Rolly: Institut Fresnel, CNRS UMR 7249, Ecole Centrale Marseille, Aix-Marseille Université, Domaine Universitaire de Saint Jérôme
Brian Stout: Institut Fresnel, CNRS UMR 7249, Ecole Centrale Marseille, Aix-Marseille Université, Domaine Universitaire de Saint Jérôme
Nicolas Bonod: Institut Fresnel, CNRS UMR 7249, Ecole Centrale Marseille, Aix-Marseille Université, Domaine Universitaire de Saint Jérôme
Sébastien Bidault: Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, INSERM U979

Nature Communications, 2012, vol. 3, issue 1, 1-6

Abstract: Abstract A photon interacts efficiently with an atom when its frequency corresponds exactly to the energy between two eigenstates. But at the nanoscale, homogeneous and inhomogeneous broadenings strongly hinder the ability of solid-state systems to absorb, scatter or emit light. By compensating the impedance mismatch between visible wavelengths and nanometre-sized objects, optical antennas can enhance light–matter interactions over a broad frequency range. Here we use a DNA template to introduce a single dye molecule in gold particle dimers that act as antennas for light with spontaneous emission rates enhanced by up to two orders of magnitude and single photon emission statistics. Quantitative agreement between measured rate enhancements and theoretical calculations indicate a nanometre control over the emitter-particle position while 10 billion copies of the target geometry are synthesized in parallel. Optical antennas can thus tune efficiently the photo-physical properties of nano-objects by precisely engineering their electromagnetic environment.

Date: 2012
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DOI: 10.1038/ncomms1964

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