Controlling Cavity Magnon Polariton Properties in Frequency and Time Domain

The cavity-magnon-polariton (CMP) is the quasi-particle of a hybrid system that connects photonic excitations to magnonic ones. With this connection, the CMP is an ideal candidate to build a bridge between the promising fields of quantum computing and magnonics. However, for the CMP to fulfill its role as an effective interface, a robust control of its underlying physical properties is imperative. Here, we show how the coupling strength can be manipulated within the experiment by a second continuous drive tone applied directly to the magnon system. Furthermore, switching into the time-domain, we demonstrate a coherent control over the different CMP modes based on ns-short pulses to both oscillating systems. At last, frequency fluctuations are investigated with the future goal of improving magnon coherence times.