Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavity
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 exist...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2022-06-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2022-0162 |
| _version_ | 1797947912598061056 |
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| author | Lu Yu-Wei Zhou Wen-Jie Li Yongyao Li Runhua Liu Jing-Feng Wu Lin Tan Haishu |
| author_facet | Lu Yu-Wei Zhou Wen-Jie Li Yongyao Li Runhua Liu Jing-Feng Wu Lin Tan Haishu |
| author_sort | Lu Yu-Wei |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-10T21:35:12Z |
| format | Article |
| id | doaj.art-aef1d7e1d7294a17b8da24c7b4683482 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-04-10T21:35:12Z |
| publishDate | 2022-06-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-aef1d7e1d7294a17b8da24c7b46834822023-01-19T12:47:00ZengDe GruyterNanophotonics2192-86142022-06-0111143307331710.1515/nanoph-2022-0162Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavityLu Yu-Wei0Zhou Wen-Jie1Li Yongyao2Li Runhua3Liu Jing-Feng4Wu Lin5Tan Haishu6School of Physics and Optoelectronic Engineering, Foshan University, Foshan528000, ChinaScience, Mathematics and Technology (SMT), Singapore University of Technology and Design (SUTD), 8 Somapah Road 487372, Singapore, SingaporeSchool of Physics and Optoelectronic Engineering, Foshan University, Foshan528000, ChinaSchool of Physics and Optoelectronics, South China University of Technology, Guangzhou510641, ChinaCollege of Electronic Engineering, South China Agricultural University, Guangzhou510642, ChinaScience, Mathematics and Technology (SMT), Singapore University of Technology and Design (SUTD), 8 Somapah Road 487372, Singapore, SingaporeSchool of Physics and Optoelectronic Engineering, Foshan University, Foshan528000, ChinaDissipation, 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.https://doi.org/10.1515/nanoph-2022-0162atom-photon quasi-bound stateslocal density of statesplasmonic-photonic cavity |
| spellingShingle | Lu Yu-Wei Zhou Wen-Jie Li Yongyao Li Runhua Liu Jing-Feng Wu Lin Tan Haishu Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavity Nanophotonics atom-photon quasi-bound states local density of states plasmonic-photonic cavity |
| title | Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavity |
| title_full | Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavity |
| title_fullStr | Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavity |
| title_full_unstemmed | Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavity |
| title_short | Unveiling atom-photon quasi-bound states in hybrid plasmonic-photonic cavity |
| title_sort | unveiling atom photon quasi bound states in hybrid plasmonic photonic cavity |
| topic | atom-photon quasi-bound states local density of states plasmonic-photonic cavity |
| url | https://doi.org/10.1515/nanoph-2022-0162 |
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