Strongly coupled magnons and cavity microwave photons

2014/05/27 by Xufeng Zhang, Chang-Ling Zou, Liang Jiang +1 · 2 citations
Physics and Astronomy · #quant-ph #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevlett.113.156401

published as Phys. Rev. Lett. 113, 156401 (2014) · 5 pages, 4 figures

arxiv created 2014/05/27 · arxiv updated 2014/10/08

Abstract

We realize a cavity magnon-microwave photon system in which magnetic dipole interaction mediates strong coupling between collective motion of large number of spins in a ferrimagnet and the microwave field in a three-dimensional cavity. By scaling down the cavity size and increasing number of spins, an ultrastrong coupling regime is achieved with a cooperativity reaching 12600. Interesting dynamic features including classical Rabi oscillation, magnetically induced transparency, and Purcell effect are demonstrated in this highly versatile platform, highlighting its great potential for coherent information processing.

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