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Published December 30, 2013 | Published
Journal Article Open

Quantum optical properties of a dipole emitter coupled to an ɛ-near-zero nanoscale waveguide


We study quantum optical properties of a dipole emitter coupled to a rectangular nanoscale waveguide with dielectric core and silver cladding. We investigate enhanced spontaneous emission and the photonic Lamb shift for emitters whose resonant frequencies are near the waveguide frequency cutoff where the waveguide behaves as an ɛ-near-zero metamaterial. Via a dyadic Green's function-based field quantization scheme, we calculate the photonic Lamb shift as well as the spontaneous emission enhancement and spectrum. Using realistic parameters for typical quantum emitters, we suggest experimentally realizable schemes to observe relatively large photonic Lamb shifts in waveguides.

Additional Information

© 2013 Optical Society of America. Received 8 Oct 2013; revised 9 Dec 2013; accepted 11 Dec 2013; published 19 Dec 2013. The two-dimensional LDOS was calculated using the BEM2D program. The authors thank Jorik van de Groep for useful discussions. The authors gratefully acknowledge support from the Air Force Office of Scientific Research Quantum Metaphotonic MURI program under grant FA9550-12-1-0488.

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