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

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 …

Spin squeezing is a form of entanglement that reshapes the quantum projection noise to
improve measurement precision. Here, we provide numerical and analytic evidence for the …

We present the experimental measurement, on a quantum processor, of a series of
polynomial lower bounds that converge to the quantum Fisher information (QFI), a …

We upper bound and lower bound the optimal precision with which one can estimate an
unknown Hamiltonian parameter via measurements of Gibbs thermal states with a known …

We demonstrate how quantum entanglement can be directly witnessed in the quasi-1D
Heisenberg antiferromagnet KCuF 3. We apply three entanglement witnesses—one tangle …

It is widely recognized that entanglement generation and dynamical chaos are intimately
related in semiclassical models via the process of decoherence. In this paper, we propose a …

The lack of methods to experimentally detect and quantify entanglement in quantum matter
impedes our ability to identify materials hosting highly entangled phases, such as quantum …

Recent experimental observation of weak ergodicity breaking in Rydberg atom quantum
simulators has sparked interest in quantum many-body scars—eigenstates which evade …

We generate spin squeezed ground states in an atomic spin-1 Bose-Einstein condensate
tuned near the quantum-critical point separating the different spin phases of the interacting …