Entanglement detection is an important problem in quantum information theory because
quantum entanglement is a key resource in quantum information processing. Realignment …

We provide a class of positive and trace-preserving maps based on symmetric
measurements. From these positive maps we present separability criteria, entanglement …

It is crucial to know whether the quantum state generated in the experiment is entangled. In
the literature, this topic was studied extensively and researchers proposed different …

By multiple realignments of density matrices, we present a new separability criterion for the
multipartite quantum state, which includes the computable cross-norm or realignment …

Quantum entanglement is the core resource in quantum information processing and
quantum computing. It is a significant challenge to effectively characterize the entanglement …

Entanglement detection problem is one of the important problem in quantum information
theory. Gurvit (2014) showed that this problem is NP complete and thus this may be the …

We show that a special type of measurements, called symmetric informationally complete
positive operator-valued measures (SIC POVMs), provide a stronger entanglement detection …

As one of the important types of entanglement, genuine multipartite entanglement plays a
key role in both foundational and practical aspects of quantum information theory. In this …

Abstract Motivated by the Peres-Horodecki criterion and the realignment criterion we
develop a more powerful method to identify entangled states for any bipartite system through …

The structural physical approximation (SPA) to a positive map is considered to be one of the
most important methods to detect entanglement in the real physical world. We first show that …