[HTML][HTML] Quantum Fisher information matrix and multiparameter estimation
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 …
metrology due to the significant importance of quantum Cramér–Rao bound in quantum …
Geometric perspective on quantum parameter estimation
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 …
technologies, in which measurements of physical quantities can be made with much greater …
[HTML][HTML] Photonic quantum metrology
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 …
aim of this research field is the estimation of unknown parameters exploiting quantum …
Enhancing teleportation of quantum Fisher information by partial measurements
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 …
another distant partner. However, from the perspective of parameter estimation, it is the …
Gaussian systems for quantum-enhanced multiple phase estimation
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 …
better total precision than estimating them individually. We show this for a multimode …
[HTML][HTML] Quantum metrology with unitary parametrization processes
Quantum Fisher information is a central quantity in quantum metrology. We discuss an
alternative representation of quantum Fisher information for unitary parametrization …
alternative representation of quantum Fisher information for unitary parametrization …
Classical-driving-enhanced parameter-estimation precision of a non-Markovian dissipative two-state system
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 …
state system is studied within the framework of the non-Markovian dissipative process. The …
Modified Grover operator for quantum amplitude estimation
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 …
Grover operator and quadratically improves the estimation accuracy in the ideal case, as in …
Quantum multiparameter metrology with generalized entangled coherent state
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 …
multi-arm optical interferometer to estimate multiple phase shifts. We obtain the quantum …