Quantum metrology can achieve far better precision than classical metrology, and is one of
the most important applications of quantum technologies in the real world. To attain the …

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

The interest in a system often resides in the interplay among different parameters governing
its evolution. It is thus often required to access many of them at once for a complete …

In quantum metrology, one of the major applications of quantum technologies, the ultimate
precision of estimating an unknown parameter is often stated in terms of the Cram\'er-Rao …

The quantum multiparameter estimation is very different from the classical multiparameter
estimation due to Heisenberg's uncertainty principle in quantum mechanics. When the …

The estimation of multiple parameters in quantum metrology is important for a vast array of
applications in quantum information processing. However, the unattainability of fundamental …

We characterize operationally meaningful quantum gains in a paradigmatic model of
lossless multiple-phase interferometry and stress the insufficiency of the analysis based …

We derive fundamental bounds on the maximal achievable precision in multiparameter
noisy quantum metrology, valid under the most general entanglement-assisted adaptive …

A longstanding problem in quantum metrology is how to extract as much information as
possible in realistic scenarios with not only multiple unknown parameters, but also limited …

The quantum Fisher information matrix is a central object in multiparameter quantum
estimation theory. It is usually challenging to obtain analytical expressions for it because …