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Using the liquid crystal-metal-low index metamaterial waveguide which supports surface plasmon polaritons, we theoretically demonstrate an active modulation of spontaneous emission. It can be modulated from 131γ0 to 327γ0 by varying optical axis.
Taking the evanescent vacuum provided by a silver or dielectric single-mode nanowire as electromagnetic background, we theoretically demonstrated the enhanced reversible photon-exciton interaction and fluorescence collection efficiency through the careful optical mode design.
Combining the coherent effects in quantum optics and anisotropic Purcell factors given by surface plasmons, we theoretically investigate the greatly enhanced Kerr nonlinearity of double lambda atomic system with two vertical dipole moments.
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