Coherent Microwave Emission of a Gain-Driven Polariton

Abstract

By developing a gain-embedded cavity magnonics platform, we create gain-driven polariton (GDP) that is activated by an amplified electromagnetic field. Distinct effects of gain-driven light-matter interaction, such as polariton auto-oscillations, polariton phase singularity, self-selection of a polariton bright mode, and gain-induced magnon-photon synchronization, are theoretically studied and experimentally manifested. Utilizing the gain-sustained photon coherence of the GDP, we demonstrate polariton-based coherent microwave amplication (~ 40 dB) and achieve high-quality coherent microwave emission (Q > 10^9).

6 pages, 4 figures

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Cited by in corpus (11)

• Ultrastrong Magnon-Photon Coupling Achieved by Magnetic Films in Contact with Superconducting Resonators
• Anomalous Long-Distance Coherence in Critically-Driven Cavity Magnonics
• Realization of the unidirectional amplification in a cavity magnonic system
• Polaritonic Quantum Matter
• Gain-Loss Coupled Systems
• Single-mode magnon-polariton lasing and amplification controlled by dissipative coupling
• `Maser-in-a-Shoebox': a portable plug-and-play maser device at room-temperature and zero magnetic-field
• Explosive growth of bistability in a cavity magnonic system
• Circuit-based cavity magnonics in the ultrastrong and deep-strong coupling regimes
• Unidirectional exceptional point of reflectionless states in a magnonic mirror array
• Gain-driven magnon-polariton dynamics in the ultrastrong coupling regime: Effective circuit approach for coherence versus nonlinearity