All our former experience with application of quantum theory seems to say that what is
predicted by quantum formalism must occur in the laboratory. But the essence of quantum …

How can one prove that a given quantum state is entangled? In this paper we review
different methods that have been proposed for entanglement detection. We first explain the …

Entanglement is considered an essential resource in quantum technologies, and central to
the understanding of quantum many-body physics. Developing protocols to detect and …

Recent interest in aspects common to quantum information and condensed matter has
prompted a flurry of activity at the border of these disciplines that were far distant until a few …

We investigate the presence of multipartite entanglement in macroscopic spin chains. We
discuss the Heisenberg and the XY model and derive bounds on the internal energy for …

We consider Gaussian states of fermionic systems and study the action of the partial
transposition on the density matrix. It is shown that, with a suitable choice of basis, these …

We show that magnetic susceptibility can reveal spin entanglement between individual
constituents of a solid, while magnetization describes their local properties. We then show …

The detection and certification of entanglement and quantum correlations in materials is of
fundamental and far‐reaching importance, and has seen significant recent progress. It …

I present methods for detecting entanglement around symmetric Dicke states. In particular, I
consider N-qubit symmetric Dicke states with N/2 excitations. I show that for large N these …

This chapter surveys some of the most important recent results in quantum computation and
quantum information, with potential applications in quantum chemistry. It provides an …