Figure 1
From: Cavity quantum electrodynamics with ferromagnetic magnons in a small yttrium-iron-garnet sphere
A high-finesse 3D microwave cavity containing a small YIG sphere. (a) The experimentally used rectangular 3D cavity is made of oxygen-free copper and has dimensions 50×18×3 mm3. The upper panel shows the top cover of the cavity, where two connectors are attached for microwave transmission. In the lower panel, a small YIG sphere with a diameter of 0.32 mm is mounted at the center of one short edge of the rectangular cavity. The inset at the left is a magnified picture of the YIG sphere. (b) Simulated magnetic-field distribution of the fundamental cavity mode TE101. (c) Simulated magnetic-field distribution of the second cavity mode TE102. A static magnetic field B0 is applied parallel to the long edge of the cavity, and the microwave magnetic field at the YIG sphere is perpendicular to the static magnetic field.
