932 citations · 1.7k across the 7 of their papers we have counts for
5 papers · 1 filter
Quantum Noise-to-Sensibility Ratio
B. M. Escher
The quantum variables that can be accessed directly by experiments are described by observables. Therefore, physical parameters can only be evaluated indirectly, via estimations ba…
Quantum limit for measurement of a weak classical force coupled to a noisy quantum-mechanical oscillator
C. L. Latune, B. M. Escher, R. L. de Matos Filho +1
Precise measurements of tiny forces and displacements play an important role in science and technology. The precision of recent experiments, while beginning to reach the limits imp…
Quantum speed limit for physical processes
M. M. Taddei, B. M. Escher, L. Davidovich +1
The evaluation of the minimal evolution time between two distinguishable states of a system is important for assessing the maximal speed of quantum computers and communication chan…
Quantum Metrological Limits via a Variational Approach
B. M. Escher, L. Davidovich, N. Zagury +1
The minimum achievable statistical uncertainty in the estimation of physical parameters is determined by the quantum Fisher information. Its computation for noisy systems is still…
General framework for estimating the ultimate precision limit in noisy quantum-enhanced metrology
B. M. Escher, R. L. de Matos Filho, L. Davidovich
The estimation of parameters characterizing dynamical processes is central to science and technology. The estimation error changes with the number N of resources employed in the ex…