Quantum frequency doubling based on tripartite entanglement with cavities

Guo Juan^{1, 2}, Wei Zhi-Feng^{1, 2}, Zhang Su-Ying^{2, †,}

Correlation fluctuation spectra S versus the normalized analysis frequency Ω, pump parameter σ = 0.1, transmission of the output coupler mirror γ₂/γ₁ = 2. The squares, circles, and triangles are for squeezing factor r = 5, 1, 0.5 respectively.