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- W4226182318 startingPage "10779" @default.
- W4226182318 abstract "Quantum emitters in confined arrays exhibit geometry dependent collective dynamics. In particular, nanoscopic regular polygon-shaped arrays can possess sub-radiant states with an exciton lifetime growing exponentially with emitter number. We show that by placing an extra resonant absorptive dipole at the ring center, such a structure becomes a highly efficient single-photon absorber with tailorable frequency. Interestingly, for exactly nine emitters in a nonagon, as it appears in a common biological light-harvesting complex (LHC2), we find a distinct minimum for its most dark state decay rate and a maximum of the effective absorption cross-section, surpassing that for a single absorptive emitter. The origin of this optimum for nine emitters can be geometrically traced to the fact that the sum of coupling strengths of a single ring emitter to all others including the center ring closely matches the coupling of the center to all ring emitters. The emerging dark collective eigenstate has dominant center occupation facilitating efficient energy absorption and fast transport. The resonance frequency can be tuned via ring size and dipole polarization. In analogy to parabolic antennas, the ring concentrates the incoming radiation at the center without being significantly excited, which minimizes transport loss and time." @default.
- W4226182318 created "2022-05-05" @default.
- W4226182318 creator A5044186246 @default.
- W4226182318 creator A5061027740 @default.
- W4226182318 creator A5070186771 @default.
- W4226182318 date "2022-03-16" @default.
- W4226182318 modified "2023-10-01" @default.
- W4226182318 title "Efficient nano-photonic antennas based on dark states in quantum emitter rings" @default.
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- W4226182318 doi "https://doi.org/10.1364/oe.437396" @default.
- W4226182318 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35473037" @default.
- W4226182318 hasPublicationYear "2022" @default.
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