Tailoring Light-Matter Interaction with a Nanoscale Plasmon Resonator

De Leon, Nathalie P., Brendan J. Shields, Chun L. Yu, Dirk E. Englund, Alexey V. Akimov, Mikhail D. Lukin, and Hongkun Park. 2012. “Tailoring Light-Matter Interaction with a Nanoscale Plasmon Resonator.” Physical Review Letters 108 (22) (May): 226803.

Abstract

We propose and demonstrate a new approach for achieving enhanced light-matter interactions with quantum emitters. Our approach makes use of a plasmon resonator composed of defect-free, highly crystalline silver nanowires surrounded by patterned dielectric distributed Bragg reflectors. These resonators have an effective mode volume (Veff) 2 orders of magnitude below the diffraction limit and a quality factor (Q) approaching 100, enabling enhancement of spontaneous emission rates by a factor exceeding 75 at the cavity resonance. We also show that these resonators can be used to convert a broadband quantum emitter to a narrow-band single-photon source with color-selective emission enhancement.

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