Abstract
Chiral detection is critical for investigating many biological processes. We use numerical calculations to study the quantum efficiency (QE) of a chiral emitter modulated by plasmonic antennas. The chiral difference in QE is discovered when the chiral emitter is placed in the vicinity of the antenna. The chiral QE is position-dependent for symmetric and asymmetric antennas and can be modulated by designing chiral configurations. The local optical chirality and the coupled harmonic oscillator model can qualitatively explain the QE difference revealed by the numerical methods. That originates from the interference between resonant modes with different phases induced by chiral interactions, resulting in the different loss of coupled modes. Our results provide extended design ideas for enantioselective fluorescent recognition of chiral molecules.
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