Abstract
We show that restricted shareability of multi-qubit entanglement can be fully characterized by unified-(q, s) entropy. We provide a two-parameter class of bipartite entanglement measures, namely unified-(q, s) entanglement with its analytic formula in two-qubit systems for q ⩾ 1, 0 ⩽ s ⩽ 1 and qs ⩽ 3. Using unified-(q, s) entanglement, we establish a broad class of the monogamy inequalities of multi-qubit entanglement for q ⩾ 2, 0 ⩽ s ⩽ 1 and qs ⩽ 3.
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