Photon-magnon coupling using gain-assisted spoof-localized surface plasmons
Year: 2025
Type: article
Abstract: Improving the photon-magnon coupling strength can be done by tuning the structure of microwave resonators to better interact with the magnon counterpart. Planar resonators accommodating unconventional photon modes beyond the half- and quarter-wavelength designs have been explored due to their optimized mode profiles and potentials for on-chip integration. Here, we designed and fabricated an actively controlled ring resonator supporting the spoof localized surface plasmons (LSPs), and implemented it in the investigation of photon-magnon coupling for hybrid magnonic applications. We demonstrated gain-assisted photon-magnon coupling with the YIG magnon mode under several different sample geometries. The achieved coupling amplification largely benefits from the high quality factor (Q-factor) due to the additional gain provided by a semiconductor amplifier, which effectively increases the Q-factor from a nearly null state (passive resonance) to more than 1000 for a quadrupole LSP mode. Our results suggest an additional control knob for manipulating photon-magnon coupled systems exploiting external controls of gain and loss.
Source: Optics Express
DOI: 10.1364/oe.557146
Authors: Yuzan Xiong, Andrew Christy, Yi Li, Rui Sun, Andrew H. Comstock, Junming Wu, Rene Lopez, Sidong Lei, Dali Sun, James F. Cahoon, Xufeng Zhang, Binbin Yang, Wei Zhang
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
Awards: ExpandQISE: Track 1: Engineering Tailored Modes in Hybrid Magnonics for Quantum Signal Transduction and Communication, Harnessing Magnonic Nonreciprocity Through Dissipation Engineering, HYBRID-MAGNON QUANTUM DEVICES, G389477448, CAREER: Magnetism and Spintronics in Quasi-two-dimensional Magnetic Hybrid Metal Halides: From Bulk to 2D limit
OpenAlex ID: W4408814513