Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

The traditional view from particle physics is that quantum gravity effects should only become
detectable at extremely high energies and small length scales. Due to the significant …

In this review, the authors introduce the notion of quantum nonclassicality of light and the
role of nonclassicality in optical quantum metrology. The first part of this paper focuses on …

Superradiant phase transitions (SPTs) are important for understanding light-matter
interactions at the quantum level, and play a central role in criticality-enhanced quantum …

Physical systems close to a quantum phase transition exhibit a divergent susceptibility,
suggesting that an arbitrarily high precision may be achieved by exploiting quantum critical …

Quantum metrology with non-classical states offers a promising route to improved precision
in physical measurements. The quantum effects of Schrödinger-cat superpositions or …

Stark systems in which a linear gradient field is applied across a many-body system have
recently been proposed for quantum sensing. Here, we explore sensing capacity of Stark …

For quantum systems with a finite dimensional Hilbert space of states, we show that the
complete incompatibility of two observables—a notion we introduce—is equivalent to the …

Non-Gaussian states with Wigner negativity are of particular interest in quantum technology
due to their potential applications in quantum computing and quantum metrology. However …

Gradient fields can effectively suppress particle tunneling in a lattice and localize the wave
function at all energy scales, a phenomenon known as Stark localization. Here, we show …