On-Chip Strong Coupling and Efficient Frequency Conversion between Telecom and Visible Optical Modes.
While the frequency conversion of photons has been realized with various approaches, the realization of strong coupling between optical modes of different colors has never been reported. Here, we present an experimental demonstration of strong coupling between telecom (1550 nm) and visible (775 nm) optical modes on an aluminum nitride photonic chip. The nonreciprocal normal-mode splitting is demonstrated as a result of the coherent interference between photons with different colors. Furthermore, a wideband, bidirectional frequency conversion with 0.14 on-chip conversion efficiency and a bandwidth up to 1.2 GHz is demonstrated.
Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA.
Xiang
X
Guo
Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA.
Chang-Ling
CL
Zou
Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA.
Hojoong
H
Jung
Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, USA.
Hong X
HX
Tang