AMO/QO SEMINAR SERIES
"Preparing Quantum States in Cavity Magnomechanics"
Dr. Jie Li
TAMU, Zhejiang University
Recent years have witnessed a significant progress of realizing strong light-matter interaction using collective excitations of spin ensembles in ferrimagnetic systems, for example in yttrium iron garnet (YIG), thanks to their very high spin density and low damping rate. It is found that the Kittel (uniformly precessing) mode in the YIG sphere can realize strong coupling with the microwave photons in a high-quality cavity, leading to cavity polaritons [1-5] and the vacuum Rabi splitting. Clearly, magnon systems provide us with a new platform for studying unique effects of strong-coupling QED. By coupling the magnons to a superconducting qubit  or phonons (vibrational modes of the YIG sphere) , the cavity-magnon systems are extended to hybrid systems, which allow one to resolve magnon number states , or generate tripartite entangled states of magnons, photons, and phonons .
In this talk, I will present our recent work on the generation of tripartite entangled states , as well as squeezed states of magnons and phonons  in a hybrid magnon-photon-phonon system. Basic knowledge of magnon systems and optomechanical systems will be introduced, which are helpful for the present study of magnomechanical systems.
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Tuesday, December 4, 2018
IQSE Seminar Room, 12:00 Noon
Institute for Quantum Science and Engineering
Texas A&M University
Pizza, salad, and soda to be served at 11:30 a.m.
Host: Dr. Girish Agarwal
THE INSTITUTE FOR QUANTUM
SCIENCE AND ENGINEERING