45 citations · 248 across the 19 of their papers we have counts for
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Multiqubit UPB: The method of formally orthogonal matrices
Lin Chen, Dragomir Z. Djokovic
We use formal matrices whose entries we view as vector variables taking unit vectors values in one-qubit Hilbert spaces of a multiqubit quantum system. We construct many unextendib…
Orthogonal product bases of four qubits
Lin Chen, Dragomir Z Djokovic
An orthogonal product basis (OPB) of a finite-dimensional Hilbert space is an orthonormal basis of consisting of product vectors $x_1…
Length filtration of the separable states
Lin Chen, Dragomir Z Djokovic
We investigate the separable states $\r$ of an arbitrary multipartite quantum system with Hilbert space $\cH$ of dimensionin . The length of $\r$ is defined as the small…
Dimension formula for induced maximal faces of separable states and genuine entanglement
Lin Chen, Dragomir Z. Djokovic
The normalized separable states of a finite-dimensional multipartite quantum system, represented by its Hilbert space , form a closed convex set . The set ${\…
Boundary of the set of separable states
Lin Chen, Dragomir Z. Djokovic
Motivated by the separability problem in quantum systems , and , we study the maximal (proper) faces of the convex body, , of normali…
Proof of the Gour-Wallach conjecture
Lin Chen, Dragomir Z. Djokovic
The absolute value of the hyperdeterminant of four qubits is a useful measure of genuine entanglement. We prove a recent conjecture of Gour and Wallach describing the pure maximall…