Entanglement plays a central role in quantum information processing and quantum physics.
However, few effective ways are known to detect the amount of entanglement of an unknown …

Given a quantum system on many qubits split into a few different parties, how many total
correlations are there between these parties? Such a quantity, aimed to measure the …

Quantum inseparabilities can be classified into three inequivalent forms: entanglement,
Einstein-Podolsky-Rosen (EPR) steering, and Bell's nonlocality. Bell-nonlocal states form a …

We undertake experimental detection of the entanglement present in arbitrary three-qubit
pure quantum states on an NMR quantum information processor. Measurements of only four …

We study the problem of witnessing entanglement among indistinguishable particles. For
this purpose, we derive a set of equations which results in necessary and sufficient …

Entanglement verification and measurement is essential for experimental tests of quantum
mechanics and also for quantum communication and information science. Standard …

Two classes of Bell-diagonal indecomposable entanglement witnesses in C 4⊗ C 4 are
considered. Within the first class, we find a generalization of the well-known Choi witness …

Quantum estimation involving multiple parameters remains an important problem of both
theoretical and practical interest. In this work, we study the problem of simultaneous …

Measuring entanglement is an essential step in a wide range of applied and foundational
quantum experiments. When a two-particle quantum state is not pure, standard methods to …

We quantify the geometric measure of entanglement in terms of mean values of observables
of entangled system. For pure states we find the relation of geometric measure of …