Quantum Fisher information matrix (QFIM) is a core concept in theoretical quantum
metrology due to the significant importance of quantum Cramér–Rao bound in quantum …

The simultaneous quantum estimation of multiple parameters can provide a better precision
than estimating them individually. This is an effect that is impossible classically. We review …

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 …

We present a framework for the quantum enhanced estimation of multiple parameters
corresponding to noncommuting unitary generators. Our formalism provides a recipe for the …

Studies of quantum metrology have shown that the use of many-body entangled states can
lead to an enhancement in sensitivity when compared with unentangled states. In this paper …

Only with the simultaneous estimation of multiple parameters are the quantum aspects of
metrology fully revealed. This is due to the incompatibility of observables. The fundamental …

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 …

We identify the multiparameter sensitivity of entangled spin states, such as spin-squeezed
and Dicke states that are spatially distributed into several addressable spatial modes …

Measurement and estimation of parameters are essential for science and engineering,
where the main quest is to find the highest achievable precision with the given resources …

The theoretical framework for networked quantum sensing has been developed to a great
extent in the past few years, but there are still a number of open questions. Among these, a …