Second harmonic generation (SHG) due to localization of the field incident ω radiation ω ω1 SHG process ω2 2ω converted to 2ω radiation 1 Second harmonic generation (SHG) due to localization of the field Second harmonic generation (SHG) enhances due to Fano resonance very strong SHG field place a Increases conversion efficiency in Solar Cells entanglement (squeezing) of plasmon field squeezing of radiated photon field 2 SHG cross-section (nm2) SHG cross-section (nm2) 3D Boundary Element Method Simulations (a) MNPBEM Simulation single λsh=λexc/2 (nm) second harmonic generation with a single MNP (4 nm2) (b) MNPBEM Simulation SHG is enhanced 100 times due to Fano resonance of QD (500 nm2) coupled λsh=λexc/2 (nm) [1] Deniz Turkpence, Gursoy B. Akguc, Alpan Bek, Mehmet Emre Tasgin, “Engineering nonlinear response of nanomaterials using Fano resonances”, arXiv:1311.0791 3 insert 2 QDs SHG can be enhanced 107 times due to path interference effect [2] Mehmet Emre Tasgin, “Divergent nonlinear optical response of three resonator system via Fano resonances”, arXiv:1404.3901 3

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# ω 2ω ω ω