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 …

Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …

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 …

Networking is integral to quantum communications and has significant potential for
upscaling quantum computer technologies. Recently, it was realized that the sensing …

Quantum metrology holds the promise of an early practical application of quantum
technologies, in which measurements of physical quantities can be made with much greater …

We introduce a general model for a network of quantum sensors, and we use this model to
consider the following question: When can entanglement between the sensors, and/or …

The extraordinary sensitivity of plasmonic sensors is well-known in the optics and photonics
community. These sensors exploit simultaneously the enhancement and the localization of …

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 …

We derive a bound on the ability of a linear-optical network to estimate a linear combination
of independent phase shifts by using an arbitrary nonclassical but unentangled input state …

A quantum theory of multiphase estimation is crucial for quantum-enhanced sensing and
imaging and may link quantum metrology to more complex quantum computation and …