2021/08/05 by Riad Yahiaoui, Yahiaoui, Riad, Zizwe Chase +20
Engineering · Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Optics (physics.optics) #Plasmonic and Surface Plasmon Research #Quantum Physics (quant-ph) #Strong Light-Matter Interactions #Thermal Radiation and Cooling Technologies
paper · pdf · doi:10.48550/arxiv.2108.02494
openalex publication_date 2021/08/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A system of N two-level atoms cooperatively interacting with a photonic field\ncan be described as a single giant atom coupled to the field with interaction\nstrength ~N0.5. This enhancement, known as Dicke cooperativity in quantum\noptics, has recently become an indispensable element in quantum information\ntechnology based on strong light-matter coupling. Here, we extend the coupling\nbeyond the standard light-matter interaction paradigm, emulating Dicke\ncooperativity in a terahertz metasurface with N meta-atoms. Cooperative\nenhancement manifested in the form of matter-matter coupling, through the\nhybridization of localized surface plasmon resonance in individual meta-atoms\nand surface lattice resonance due to the periodic array of the meta-atoms. By\nvarying the lattice constant of the array, we observe a clear anticrossing\nbehavior, a signature of strong coupling. Furthermore, through engineering of\nthe capacitive split-gap in the meta-atoms, the coupling rate was cooperatively\nenhanced into the ultrastrong coupling regime by a factor of N0.5. This\nroom-temperature technology serves as a convenient quantum emulator of the\ndynamics of a qubit with a giant dipole moment coherently driven by a single\nbosonic field.\n