The laws of quantum mechanics allow to perform measurements whose precision
supersedes results predicted by classical parameter estimation theory. That is, the precision …

Quantum metrology overcomes standard precision limits and plays a central role in science
and technology. Practically, it is vulnerable to imperfections such as decoherence. Here we …

We address parameter estimation for structured environments and suggest an effective
estimation scheme based on continuous-variables quantum probes. In particular, we …

We study the phase sensitivity of an SU (1, 1) interferometer with photon loss by using three
different photon operations schemes, ie, performing photon-addition operation on the input …

We address the discontinuities of the quantum Fisher information (QFI) that may arise when
the parameter of interest takes values that change the rank of the quantum statistical model …

We present a table-top quantum estimation protocol to measure the gravitational
acceleration g by using an optomechanical cavity. In particular, we exploit the nonlinear …

In this paper, we present the differential master equation (or Liouville–Von​ Neumann
equation) for a harmonic oscillator with position-dependent mass (PDM) exposed to a …

This is a tutorial aimed at illustrating some recent developments in quantum parameter
estimation beyond the Cramèr–Rao bound, as well as their applications in quantum …

We find that a quantum device having an accessory involving precision measurement can
have an enhancement of its metrological precision in estimating an unknown parameter of …

We show that in presence of a local and uncorrelated dephasing noise, quantum advantage
can be obtained in the Fisher information-based lower bound of the minimum uncertainty in …