ArticleNanophotonics (Berlin, Germany)2022
Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavity.
Article in Nanophotonics (Berlin, Germany), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Interference-Induced Cavity Resonances and Imaginary Rabi Splitting.Nanophotonics (Berlin, Germany) · 2026Article
- Spatio-spectral localized modal coupling for room-temperature quantum coherence protection.Nanophotonics (Berlin, Germany) · 2025Article
- Guided domino lithography for uniform fabrication of single-digit-nanometer scale plasmonic nanoantenna.Nanophotonics (Berlin, Germany) · 2023Article
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7 authors.
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Abstract
Dissipation, often associated with plasmons, leads to decoherence and is generally considered fatal for quantum nonlinearities and entanglement. Counterintuitively, by introducing a dissipative plasmonic nanoantenna into a typical cavity quantum electrodynamics (QED) system, we unveil the wide existence of the atom-photon quasi-bound state (qBS), a kind of exotic eigenstate with anomalously small decay, in the hybrid plasmonic-photonic cavity. To derive the analytical condition of atom-photon qBS, we formulate a quantized two-mode model of the local density of states by connecting the interacting uncoupled cavity modes to the macroscopic QED. With resonant plasmon-photon coupling, we showcase the single-atom qBS that improves the efficiency of single-photon generation over one order of magnitude; and the two-atom qBS that significantly enhances spontaneous entanglement generation compared with a bare photonic cavity. Notably, such single-atom and multi-atom qBS can be simultaneously accessed in realistic plasmonic-photonic cavities, providing a versatile platform for advanced quantum technologies, such as quantum light sources, quantum computation, and quantum information.
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