2014/05/31 by Bartosz Regula, Sara Di Martino, Soojoon Lee +1 · 1 citation
Physics and Astronomy · Mathematics · #quant-ph #cond-mat.stat-mech #math-ph #math.MP
paper · pdf · doi:10.1103/physrevlett.113.110501
published as Phys. Rev. Lett. 113, 110501 (2014) · 5 pages, 2 figures; v3: Errors in class-2 and class-7 states in Table I and Figure 2(a) are corrected with respect to the published version. All conclusions are unaffected
arxiv created 2016/01/14 · arxiv updated 2016/01/15
We investigate the distribution of bipartite and multipartite entanglement in multiqubit states. In particular we define a set of monogamy inequalities sharpening the conventional Coffman-Kundu-Wootters constraints, and we provide analytical proofs of their validity for relevant classes of states. We present extensive numerical evidence validating the conjectured strong monogamy inequalities for arbitrary pure states of four qubits.