Quantum technologies exploit entanglement to revolutionize computing, measurements, and
communications. This has stimulated the research in different areas of physics to engineer …

Spinor Bose gases form a family of quantum fluids manifesting both magnetic order and<?
format?> superfluidity. This article reviews experimental and theoretical progress in …

Entanglement is an important resource for quantum technologies. There are many ways
quantum systems can be entangled, ranging from the two-qubit case to entanglement in …

The Fisher information F gives a limit to the ultimate precision achievable in a phase
estimation protocol. It has been shown recently that the Fisher information for a linear two …

We present several entanglement criteria in terms of the quantum Fisher information that
help to relate various forms of multipartite entanglement to the sensitivity of phase …

In both classical and quantum many-body physics, it is a core issue to characterize statistical
correlations among different degrees of freedom. From this point of view, a natural question …

The standard quantum limit of measurement uncertainty can be surpassed using squeezed
states, which minimize the uncertainty product in Heisenberg's relation by reducing the …

Recent experiments demonstrate the production of many thousands of neutral atoms
entangled in their spin degrees of freedom. We present a criterion for estimating the amount …

We investigate the collective decay dynamics of atoms with a generic multilevel structure
(angular momenta F↔ F′) coupled to two light modes of different polarization inside a …

The concept of randomized measurements on individual particles has proven to be useful
for analyzing quantum systems and is central for methods like shadow tomography of …