Efficient entanglement concentration for arbitrary less-entangled NOON state assisted by single photons

Zhou Lan^{1, 2}, Sheng Yu-Bo^{2, 3, †,}

The success probability (P_total) of the two ECPs as a function of the initial entanglement coefficient α, after they have been operated for k times. For numerical simulation, we choose k = 1, 3, 5, respectively.