Strong monogamy conjecture for multiqubit entanglement: The four-qubit case
Quantum Physics
2016-01-15 v3 Statistical Mechanics
Mathematical Physics
math.MP
Abstract
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.
Keywords
Cite
@article{arxiv.1405.3989,
title = {Strong monogamy conjecture for multiqubit entanglement: The four-qubit case},
author = {Bartosz Regula and Sara Di Martino and Soojoon Lee and Gerardo Adesso},
journal= {arXiv preprint arXiv:1405.3989},
year = {2016}
}
Comments
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