Tripartite continuous-variable entanglement of NOPA system<xref rid="cpb_27_8_084204_fn1" ref-type="fn">*</xref> <fn id="cpb_27_8_084204_fn1"> <label>*</label> <p>Projected supported by the National Natural Science Foundation of China (Grant No. 11504074) and the Science Fund from the State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Shanxi, China (Grant No. KF201601).</p> </fn>

Tripartite continuous-variable entanglement of NOPA system* *

Projected supported by the National Natural Science Foundation of China (Grant No. 11504074) and the Science Fund from the State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Shanxi, China (Grant No. KF201601).

Zhao Chao-Ying^{1, 2, †}, Zhang Cheng-Mei³

(color online) Plots of variance V₁ versus t with ε₀ = 2 for k = 0 (solid curve), 0.5 (narrow dashed curve), 0.9 (wide dashed curve), and 1.1 (dashed–dotted curve), for the cases of panel (a): ε₁₂ = 1.5 ε₀, ε₁₃ = 0.6 ε₀, ε₂₃ = ε₀; (b) ε₁₂ = 1.2 ε₀, ε₁₃ = 0.4 ε₀, ε₂₃ = 0.8 ε₀; (c) ε₁₂ = ε₀, ε₁₃ = ε₀, ε₂₃ = ε₀.