Tighter constraints of multiqubit entanglement in terms of unified entropy
Ya-Ya Ren, Zhi‐Xi Wang, Shao-Ming Fei · Laser Physics Letters · 2021
Abstract We present classes of monogamy inequalities related to the α th ( α ⩾ 1 ) power of the entanglement measure based on the unified-( q , s ) entropy, and polygamy inequalities related to the β th ( 0 ⩽ β ⩽ 1 ) power of the unified-( q , s ) entanglement of assistance by using Hamming weight. We show that these monogamy and polygamy inequalities are tighter than the existing ones. Detailed examples are given for illustrating the advantages.