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 …

One of the best signatures of nonclassicality in a quantum system is the existence of
correlations that have no classical counterpart. Different methods for quantifying the …

Quantum information theory is a branch of science at the frontier of physics, mathematics,
and information science, and offers a variety of solutions that are impossible using classical …

We investigate the relationship between mixedness and entanglement for Gaussian states
of continuous variable systems. We introduce generalized entropies based on Schatten p …

Quantum state tomography is the process by which an identical ensemble of unknown
quantum states is completely characterized. A sequence of identical measurements within a …

The theory of quantum information, that is, of the transmission, storage, and processing of
information using quantum-mechanical systems, is now well developed. It has been …

A tomographic measurement is a ubiquitous tool for estimating the properties of quantum
states, and its application is known as quantum state tomography (QST). The process …

Quantum coherence is a key element in topical research on quantum resource theories and
a primary facilitator for design and implementation of quantum technologies. However, the …

Maximally entangled mixed states are those states that, for a given mixedness, achieve the
greatest possible entanglement. For two-qubit systems and for various combinations of …

The term'nonclassical states' refers to the quantum states that cannot be produced in the
usual sources of light, such as lasers or lamps, rather than those requiring more …