  Hybrid dynamic systems have recently gained interests with respect to both
fundamental physics and device applications, particularly with their potential
for coherent information processing. In this perspective, we will focus on the
recent rapid developments of magnon-based hybrid systems, which seek to combine
magnonic excitations with diverse excitations for transformative applications
in devices, circuits and information processing. Key to their promising
potentials is that magnons are highly tunable excitations and can be easily
engineered to couple with various dynamic media and platforms. The capability
of reaching strong coupling with many different excitations has positioned
magnons well for studying solid-state coherent dynamics and exploiting unique
functionality. In addition, with their gigahertz frequency bandwidth and the
ease of fabrication and miniaturization, magnonic devices and systems can be
conveniently integrated into microwave circuits for mimicking a broad range of
device concepts that have been applied in microwave electronics, photonics and
quantum information. We will discuss a few potential directions for advancing
magnon hybrid systems, including on-chip geometry, novel coherent magnonic
functionality, and coherent transduction between different platforms. As future
outlook, we will discuss the opportunities and challenges of magnonic hybrid
systems for their applications in quantum information and magnonic logic.
