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We report recent research progress on the strong coupling between an ensemble of quantum emitters (QEs) or chiral molecules and plasmon in the nanoparticle cluster, including strong interaction between chiral molecules and orbital angular momentum of photon, multi-qubit entanglement for two-level QEs, resonant energy transfer and so on.
In this paper, a novel analogue tunable bandpass filter with constant absolute bandwidth is presented. The filter is designed based on full wavelength microstrip open ring resonators loaded with varactors. Magnetic dominated mixed coupling is designed to make the coupling coefficient meet the requirement of constant absolute bandwidth response. The filter is designed, fabricated and measured. The...
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