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

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 …

Most studies in multiparameter estimation assume the dynamics is fixed and focus on
identifying the optimal probe state and the optimal measurements. In practice, however …

The purport of quantum teleportation is to completely transfer information from one party to
another distant partner. However, from the perspective of parameter estimation, it is the …

For a fixed average energy, the simultaneous estimation of multiple phases can provide a
better total precision than estimating them individually. We show this for a multimode …

Quantum Fisher information is a central quantity in quantum metrology. We discuss an
alternative representation of quantum Fisher information for unitary parametrization …

The dynamics of quantum Fisher information (QFI) of the phase parameter in a driven two-
state system is studied within the framework of the non-Markovian dissipative process. The …

In this paper, we propose a quantum amplitude estimation method that uses a modified
Grover operator and quadratically improves the estimation accuracy in the ideal case, as in …

We propose a generalized form of entangled coherent states (ECS) and apply them in a
multi-arm optical interferometer to estimate multiple phase shifts. We obtain the quantum …