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We demonstrated the enhanced terahertz transmission through superconducting NbN subw ave length hole arrays. The transmission peak value and frequency exhibit thermal tuning behaviors, which can be attributed to the temperature-dependent complex permittivity of superconducting film. The microscopic hybrid wave model was adopted to analyze the role of surface waves in the enhanced transmission theoretically...
The Dicke subradiance and superradiance resulting from the interaction between surface plasmons of nanospheres and an ensemble of quantum emitters have been investigated by using a Green's function approach. Based on such an investigation, we propose a scheme for a deterministic multi-qubit quantum phase gate. The case of single sphere has been compared with nanosphere cluster which possesses hot...
We theoretically investigate interacting dark resonances in a plasmonic meta-molecule comprising a bright nano-antenna coupled to cascaded dark elements. This structure enables efficient energy transfer and exhibits sub-natural spectral response analogous to the atomic counterpart.
Nonlinear emission from plasmonic nanostructures is studied by measuring the second harmonic and third harmonic emission as a function of geometry. An overlap integral and mode-matching considerations accurately predict the optimal geometry.
We report plasmon lasers with strong cavity feedback and optical confinement to 1/20th wavelength. Strong feedback arises from total internal reflection of plasmons, while confinement enhances the spontaneous emission rate by up to 20 times.
Current methods for the evaluation of solar cell efficiency cannot be applied to extremely thin cells where phenomena from the realm of near-field optics prevail. We use the fluctuation dissipation theorem to calculate the rate of power removal from a semiconductor/metal system. This establishes for the first time, to our knowledge, a rigorous electromagnetic basis for solar cell efficiency analysis...
Based on a hybrid-plasmon (HPP) platform, we report the first demonstrations of low-loss, deep-subwavelength waveguiding and plasmon semiconductor Nanolaser with room temperature operating, towards wavelength-scale photonic integrated circuits.
Based on a hybrid-plasmon (HPP) platform, we report the first demonstrations of low-loss, deep-subwavelength waveguiding and plasmon semiconductor Nanolaser with room temperature operating, towards wavelength-scale photonic integrated circuits.
We review recent progress on metal-based lasers with optical confinement approaching 1/20th of the wavelength at room temperature and discusses the broader impact of plasmonic light sources and their application.
We have experimentally investigated dual-layer fishnet structures in the terahertz regime. The dispersion behavior of the different modes in this structure is inferred from their response to changes in THz wave incident angle and the thickness of the dielectric layer separating the two metallic films. The theory of magnetic plasmon polariton (MPP) is applied to explain the coupled dispersive modes.
We report plasmon lasers with optical confinement of 1/20th wavelength operating at room temperature. The strong confinement and efficient feedback arising from plasmonic total internal reflection enhance the spontaneous emission rate up to 20 times.
We report plasmonic Fabry-Perot nano-cavities formed by high aspect ratio metal mirrors on a metal surface. Quality factors from 100-200 were obtained, limited by plasmonic losses and fin scattering at short and long wavelengths respectively.
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