Yu-Bo Hou

Jul 22, 2024 | link.aps.org | Quantum Optoelectronic Devices |Xi'an Jiaotong |Xin-Lei Hei |Yu-Bo Hou

We study the hybrid system of a high-quality yttrium-iron-garnet (YIG) sphere magnetically coupled to a superconducting flux qubit via the magnetic fields created by two persistent-current quantum states. When the flux qubit is operated away from its sweet point, a coherent nonlinear two-magnon interaction can be predicted; that is, the qubit is excited by absorbing a pair of magnons.