Strong monogamy of quantum entanglement for multi-qubit W-class states

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We provide a strong evidence for strong monogamy inequality of multi-qubit entanglement recently proposed in [B. Regula et al., Phys. Rev. Lett. 113, 110501 (2014)]. We consider a large class of multi-qubit generalized W-class states, and analytically show that the strong monogamy inequality of multi-qubit entanglement is saturated by this class of states.