We present an overview of the quantitative theory of single-copy entanglement in finite-
dimensional quantum systems. In particular we emphasize the point of view that different …

The main concern of this paper is how to define proper measures of multipartite
entanglement for mixed quantum states. Since the structure of partial separability and …

We investigate the distribution of bipartite and multipartite entanglement in multiqubit states.
In particular, we define a set of monogamy inequalities sharpening the conventional …

Finding the closest separable state to a given target state is a notoriously difficult task, even
more difficult than deciding whether a state is entangled or separable. To tackle this task, we …

We investigate possible generalizations of the Coffman-Kundu-Wootters monogamy
inequality to four qubits, accounting for multipartite entanglement in addition to the bipartite …

Quantifying entanglement in composite systems is a fundamental challenge, yet exact
results are available in only a few special cases. This is because hard optimization problems …

We study the problem of remote one-qubit mixed state creation using a pure initial state of
two-qubit sender and spin-1/2 chain as a connecting line. We express the parameters of …

We present observable lower bounds for several bipartite entanglement measures including
entanglement of formation, geometric measure of entanglement, concurrence, convex-roof …

I calculate the mixed three-tangle τ 3 [ρ] for the reduced density matrices of the four-qubit
representant states found in Phys. Rev. A 65, 052112 (2002) PLRAAN 1050-2947 …

We provide detailed proofs of triangle inequalities in coherence measures and
entanglement concurrence. If a rank-2 state ϱ can be expressed as a convex combination of …