# Transient Response of the Cavity-Magnon-Polariton

## TL;DR

This paper experimentally investigates the transient Rabi oscillations in a cavity-magnon-polariton system, demonstrating control over amplitude and frequency via magnetic bias, and linking transient and steady-state behaviors for better understanding of spin-photon interactions.

## Contribution

It introduces a transient response model for cavity-magnon-polaritons that connects steady state and transient behaviors and enables mode composition control through bias fields.

## Key findings

- Controlled Rabi oscillations via magnetic bias.
- Linked transient response to steady-state behavior.
- Quantified polariton mode composition control.

## Abstract

The Rabi oscillations of a coupled spin-photon system are experimentally studied using time domain microwave transmission measurements. An external magnetic bias field is applied to control the amplitude and frequency of Rabi oscillations, which are a measure of the coherent spin-photon energy exchange and coupling strength respectively. The amplitude and frequency control is described in the time domain as the transient response of a two-level spin-photon system. This approach reveals the link between steady state and transient behaviour of the cavity-magnon-polariton, which is necessary to interpret time domain cavity-spintronic experiments. This transient model also allows us to understand and quantify the polariton mode composition, which can be controlled by the bias field.