Strongly coupled magnons and cavity microwave photons.
We realize a cavity magnon-microwave photon system in which a magnetic dipole interaction mediates strong coupling between the collective motion of a large number of spins in a ferrimagnet and the microwave field in a three-dimensional cavity. By scaling down the cavity size and increasing the number of spins, an ultrastrong coupling regime is achieved with a cooperativity reaching 12,600. Interesting dynamic features including classical Rabi-like oscillation, magnetically induced transparency, and the Purcell effect are demonstrated in this highly versatile platform, highlighting its great potential for coherent information processing.
Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA.
Xufeng
X
Zhang
Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA and Key Lab of Quantum Information, University of Science and Technology of China, Hefei 230026, Anhui, People's Republic of China.
Chang-Ling
CL
Zou
Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA.
Liang
L
Jiang
Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA.
Hong X
HX
Tang