MISC

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2021年8月5日

Tunable Plasmonic Ultrastrong Coupling: Emulating Dicke Physics at Room Temperature

  • Riad Yahiaoui
  • ,
  • Zizwe A. Chase
  • ,
  • Chan Kyaw
  • ,
  • Fuyang Tay
  • ,
  • Andrey Baydin
  • ,
  • G. Timothy Noe II
  • ,
  • Junyeob Song
  • ,
  • Junichiro Kono
  • ,
  • Amit Agrawal
  • ,
  • Motoaki Bamba
  • ,
  • Thomas A. Searles

記述言語
英語
掲載種別
機関テクニカルレポート,技術報告書,プレプリント等

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^0.5. This enhancement, known as Dicke cooperativity in quantum
optics, has recently become an indispensable element in quantum information
technology based on strong light-matter coupling. Here, we extend the coupling
beyond the standard light-matter interaction paradigm, emulating Dicke
cooperativity in a terahertz metasurface with N meta-atoms. Cooperative
enhancement manifested in the form of matter-matter coupling, through the
hybridization of localized surface plasmon resonance in individual meta-atoms
and surface lattice resonance due to the periodic array of the meta-atoms. By
varying the lattice constant of the array, we observe a clear anticrossing
behavior, a signature of strong coupling. Furthermore, through engineering of
the capacitive split-gap in the meta-atoms, the coupling rate was cooperatively
enhanced into the ultrastrong coupling regime by a factor of N^0.5. This
room-temperature technology serves as a convenient quantum emulator of the
dynamics of a qubit with a giant dipole moment coherently driven by a single
bosonic field.

リンク情報
arXiv
http://arxiv.org/abs/arXiv:2108.02494
URL
http://arxiv.org/abs/2108.02494 本文へのリンクあり
ID情報
  • arXiv ID : arXiv:2108.02494

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