Unified entropy, entanglement measures and monogamy of multi-party entanglement
Jeong San Kim, Barry Cyril Sanders · Journal of Physics A Mathematical and Theoretical · 2011
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.