Coexistence of coupling-induced transparency and absorption of transmission signals in magnon-mediated photon-photon coupling

TL;DR

This study demonstrates the simultaneous occurrence of coupling-induced transparency and absorption in a magnon-mediated photon-photon system, providing insights for designing advanced quantum devices.

Contribution

The paper presents the first experimental observation and analytical modeling of coexistence of CIT and CIA in a magnon-photon hybrid system, advancing quantum device design.

Findings

Experimental confirmation of simultaneous CIT and CIA phenomena.

Analytical model accurately reproduces observed effects.

Guidance for designing controllable photon-magnonic devices.

Abstract

Coexistence of coupling-induced transparency (CIT) and absorption (CIA) of signals in magnon-mediated photon-photon coupling was experimentally determined in a planar hybrid structure consisting of a yttrium iron garnet (YIG) film and three concentric inverted-split-ring resonators (ISRRs). The experimental observation of simultaneous CIT and CIA phenomena was ascribed to magnon-mediated photon-photon coupling between the individually decoupled ISRRs. In order to capture the generic physics of the observed interactions, we constructed an appropriate analytical model based on the balance between the coherent and dissipative multiple-paths interactions, which model precisely reproduced both the CIT and CIA experimentally observed from a single hybrid system. This work, promisingly, can provide guidance for design of efficient, flexible, and well-controllable photon-magnonic devices that are highly in demand for applications to quantum technologies currently under development.