Electric control of cooperative polariton dynamics in a cavity-magnon system
2018
The recent development of cooperative magnon-polariton dynamics in feedback coupled cavities holds great potential for non-classical information processing. With the goal of increasing the cooperativity and integrating this innovative technique with microwave circuits, in this paper, we have developed a tunable, planar, feedback-coupled cavity consisting of an active cavity and a varactor-loaded passive cavity. By tuning the voltage bias, the feedback cavity can operate in a wide frequency range with a quality factor better than 104. As a consequence, our feedback cavity allows both the magnetic control and electric control of the coherent magnon-photon dynamics, enabling the controllable evolution of a cavity-magnon triplet to a cavity-magnon quintuplet. This electric control of the coherent magnon-photon dynamics may enable the design of on-chip polariton devices which exploit electromagnetic wave-matter interactions.
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