251 citations · 1.4k across the 48 of their papers we have counts for
8 papers · 1 filter
A perspective on multiparameter quantum metrology: from theoretical tools to applications in quantum imaging
Francesco Albarelli, Marco Barbieri, Marco G. Genoni +1
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…
Upper bounds on the Holevo Cramér-Rao bound for multiparameter quantum parametric and semiparametric estimation
Francesco Albarelli, Mankei Tsang, Animesh Datta
We formulate multiparameter quantum estimation in the parametric and semiparametric setting. While the Holevo Cramér-Rao bound (CRB) requires no substantial modifications in moving…
Quantum frequency estimation with conditional states of continuously monitored independent dephasing channels
Francesco Albarelli, Matteo A. C. Rossi, Marco G. Genoni
We discuss the problem of estimating a frequency via N-qubit probes undergoing independent dephasing channels that can be continuously monitored via homodyne or photo-detection. We…
Evaluating the Holevo Cramér-Rao bound for multi-parameter quantum metrology
Francesco Albarelli, Jamie F. Friel, Animesh Datta
Only with the simultaneous estimation of multiple parameters are the quantum aspects of metrology fully revealed. This is due to the incompatibility of observables. The fundamental…
Quantum Semiparametric Estimation
Mankei Tsang, Francesco Albarelli, Animesh Datta
In the study of quantum limits to parameter estimation, the high dimensionality of the density operator and that of the unknown parameters have long been two of the most difficult…
On the discontinuity of the quantum Fisher information for quantum statistical models with parameter dependent rank
Luigi Seveso, Francesco Albarelli, Marco G. Genoni +1
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 mo…
Quantum state engineering by non-deterministic noiseless linear amplification
Hamza Adnane, Matteo Bina, Francesco Albarelli +2
We address quantum state engineering of single- and two-mode states by means of non-deterministic noiseless linear amplifiers (NLAs) acting on Gaussian states. In particular, we sh…
Characterizing non-deterministic noiseless linear amplifiers at the quantum limit
Hamza Adnane, Francesco Albarelli, Abdelhakim Gharbi +1
We address the characterization of the gain parameter of a non-deterministic noiseless linear amplifier (NLA) and compare the performances of different estimation strategies using…