Nonreciprocity in Cavity Magnonics at Milikelvin Temperature

Autor:	Kim, Mun, Tabesh, Armin, Zegray, Tyler, Barzanjeh, Shabir, Hu, Can-Ming
Rok vydání:	2023
Předmět:	Physics - Applied Physics
Druh dokumentu:	Working Paper
Popis:	Incorporating cavity magnonics has opened up a new avenue in controlling non-reciprocity. This work examines a yttrium iron garnet sphere coupled to a planar microwave cavity at milli-Kelvin temperature. Non-reciprocal device behavior results from the cooperation of coherent and dissipative coupling between the Kittel mode and a microwave cavity mode. The device's bi-directional transmission was measured and compared to the theory derived previously in the room temperature experiment. Investigations are also conducted into key performance metrics such as isolation, bandwidth, and insertion loss. The findings point to the coexistence of coherent and dissipative interactions at cryogenic conditions, and one can leverage their cooperation to achieve directional isolation. This work foreshadows the application of a cavity magnonic isolator for on-chip readout and signal processing in superconducting circuitry. Comment: 7 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2303.04358 Zobrazit plný text záznamu View this record from Arxiv