One of the most widely known building blocks of modern physics is Heisenberg's
indeterminacy principle. Among the different statements of this fundamental property of the …

Quantum coherence is a fundamental property of quantum systems, separating quantum
from classical physics. Recently, there has been significant interest in the characterization of …

The quantum Fisher information (QFI) is a fundamental quantity of interest in many areas
from quantum metrology to quantum information theory. It can in particular be used as a …

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 …

The quantum Fisher information (QFI) quantifies the ultimate precision of estimating a
parameter from a quantum state and can be regarded as a reliability measure of a quantum …

Quantum metrology employs nonclassical systems to improve the sensitivity of
measurements. The ultimate limit of this sensitivity is dictated by the quantum Cramér–Rao …

The recent advent of noisy intermediate-scale quantum devices, especially near-term
quantum computers, has sparked extensive research efforts concerned with their possible …

Quantum resource manipulation may include an ancillary state called a catalyst, which aids
the transformation while restoring its original form at the end, and characterizing the …

Quantum coherence is one of the fundamental aspects distinguishing classical and quantum
theories. Coherence between different energy eigenstates is particularly important, as it …

The quantum Fisher information (QFI) represents a fundamental concept in quantum
physics. It quantifies the metrological potential of quantum states in quantum parameter …