Quantum metrology pursues the physical realization of higher‐precision measurements to
physical quantities than the classically achievable limit by exploiting quantum features, such …

Quantum Fisher information matrix (QFIM) is a cornerstone of modern quantum metrology
and quantum information geometry. Apart from optimal estimation, it finds applications in …

We derive several expressions for the quantum Fisher information matrix (QFIM) for the multi-
parameter estimation of multi-mode Gaussian quantum states, the corresponding symmetric …

In quantum metrology, the famous result of Heisenberg limit, scaling as 1/N (with N the
number of probes), can be surpassed by considering nonlinear coupling measurement. In …

We propose a postselected amplification (PSA) scheme for phase shift measurement of
optical coherent states when passing through the Mach-Zehnder-interferometer (MZI) …

A surprising feature of the Kerr metric is the anisotropy of the speed of light. The angular
momentum of a rotating massive object causes co-and counterpropagating light paths to …

We investigate the use of a nonlinear optical interferometer to estimate local gravitational
acceleration. We study a Mach–Zehnder interferometer (MZI) in an optical fountain …

Quantum multiparameter estimation involves estimating multiple parameters simultaneously
and can be more precise than estimating them individually. Our interest here is to determine …

In this work, we study the quantum Fisher information on the Heisenberg model in presence
of the Dzyaloshinskii–Moriya interaction, basing on the multi-parametric estimation strategy …

In this paper, we analyze the quantum Fisher information related to the Heisenberg model
when prsence to the influence of a magnetic field. We utilize a multi-parametric estimation …