Strong Nonlinear Coupling in a Si3N4 Ring Resonator
We report a nonlinear strong coupling between to weak fields containing a few photons inside a cavity. This strong coupling is the result of an effective second order nonlinearity induced by strong pump field in a Kerr cavity. The strong coupling regime is evidenced by Rabi splitting of the cavity resonance.
REFERENCE: Ramelow, S, Farsi, A, Verno, Z, S. Clemmen, Ji, X, Sipe, J, Liscidini, M, Lipson, M, Gaeta, A, Strong Nonlinear Coupling in a Si3N4 Ring Resonator, Physical Review Letters, 122, p.153906 (2019) DOI