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

Input–output relation in NOPA system, the modes a₁, a₂, a₃, and frequencies ω₀, ω_j, ω_k refer to pump, signal, and idler field, respectively. χ_ij represents the effective second-order susceptibility of nonlinear crystal in NOPA system.