Plasmonic Superradiance of Two Emitters Near Metal Nanorod
arXiv:1604.08310 · doi:10.1088/1361-6463/aa6fd4
Abstract
Quantum emitters, such as q-dots and dye molecules, in the immediate vicinity of plasmonic nanostructures, resonantly excite surface plasmon-polaritons (SPPs) under incoherent pump. The efficiency in the excitation of SPPs increases as the number of the emitters, because the SPP field synchronizes emission of the coupled emitters, in analogy with the superadiance (SR) of coupled emitters in free space. Using fully quantum mechanical model for two emitters coupled to a single gold nanorod, we predict up to 15% increase in the emission yield of single emitter compared to only one emitter coupled to the nanorod due to plasmonic SR. (XW: I use emission yield because the quantum efficiency is one for emitters in free space and there is no room for enhancement). Such emission enhancement is stationary and should be observable even with strong dissipation and dephasing under incoherent pump. Solid-state quantum emitters with blinking behaviors may be utilized to demonstrate such plasmonic SR emission enhancement. Plasmonic SR may find implications in the excitation of non-radiative modes in plasmonic waveguides; and lowing threshold of plasmonic nanolasers.
References in corpus (5)
- Electrically-driven optical antennas
- Observation of Dicke Superradiance for Two Artificial Atoms in a Cavity with High Decay Rate
- Spontaneous hot-electron light emission from electron-fed optical antennas
- Single-photon superradiance from a quantum dot
- Systematic study of carrier correlations in the electron-hole recombination dynamics of quantum dots