Multi-copy entanglement purification with practical spontaneous parametric down conversion sources

Zhang Shuai-Shuai^{1, 3}, Shu Qi^{1, 3}, Zhou Lan², Sheng Yu-Bo^{1, †}

(color online) The success probability P altered with the initial fidelity F. The curve a is the success probability for two-copy EPP. Curve b is success probability for three-copy EPP, and curve c is success probability for four-copy EPP, respectively. Here p = 0.1.