2022年12月5日
Dicke-Cooperativity-Assisted Ultrastrong Coupling Enhancement in Terahertz Metasurfaces
Nano Letters
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プレプリント・著者最終稿
回数 : 38
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acs.nanolett.2c01892
- 出版者・発行元
- ACS Publications
A system of N two-level atoms cooperatively interacting with a photonic field can be described as a single giant atom coupled to the field with interaction strength ∝𝑁⎯⎯⎯⎯√. This enhancement, known as Dicke cooperativity in quantum optics, has recently become an indispensable element in quantum information technology. Here, we extend the coupling beyond the standard light–matter interaction paradigm, enhancing Dicke cooperativity in a terahertz metasurface with N meta-atoms. The cooperative enhancement is manifested through the hybridization of the localized surface plasmon resonance in individual meta-atoms and surface lattice resonance due to the periodic array. Furthermore, through engineering of the capacitive split-gap in the meta-atoms, we were able to enhance the coupling rate into the ultrastrong coupling regime by a factor of 𝑁⎯⎯⎯⎯√. Our strategy can serve as a new platform for demonstrating effective control of fermionic systems by weak pumping, superradiant emission, and ultrasensitive sensing of molecules.
- リンク情報
- ID情報
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- DOI : 10.1021/acs.nanolett.2c01892
- ISSN : 1530-6984
- ISSN : 1530-6992
- ORCIDのPut Code : 124791136
- arXiv ID : arXiv:2108.02494