251 citations · 1.4k across the 48 of their papers we have counts for
4 papers · 1 filter
Attainability of the Holevo-Cramér-Rao bound for two-qubit 3D magnetometry
Jamie Friel, Pantita Palittapongarnpim, Francesco Albarelli +1
We study quantum-limited 3D magnetometry using two qubits. Two qubits form the smallest multi-qubit system for 3D magnetometry, the simultaneous estimation of three phases, as it i…
Experimental quantum-enhanced response function estimation
Ilaria Gianani, Francesco Albarelli, Valeria Cimini +1
Characterizing a system often demands learning its response function to an applied field. Such knowledge is rooted on the experimental evaluation of punctual fiducial response and…
Noisy quantum metrology enhanced by continuous nondemolition measurement
Matteo A. C. Rossi, Francesco Albarelli, Dario Tamascelli +1
We show that continuous quantum nondemolition (QND) measurement of an atomic ensemble is able to improve the precision of frequency estimation even in the presence of independent d…
Time-local optimal control for parameter estimation in the Gaussian regime
Alexander Predko, Francesco Albarelli, Alessio Serafini
Information about a classical parameter encoded in a quantum state can only decrease if the state undergoes a non-unitary evolution, arising from the interaction with an environmen…