activity
20212026
most citedTaming singularities of the quantum Fisher information

19 citations · 32 across the 7 of their papers we have counts for

collaborators

7 papers

quant-ph2026

Decoherence in matter-wave Talbot interference: A hydrodynamic probability-flow analysis

David Navia, Ángel S. Sanz

We investigate the suppression of matter-wave Talbot interference under environmentally induced decoherence. The system is modeled as an atomic beam diffracted by a periodic gratin…

physics.optics2024★ 1 cited

Engineering of self-bending surface plasmon polaritons through Hermite-Gaussian mode expansion

J. Hernández-Rueda, A. S. Sanz, R. Martínez-Herrero

Surface plasmon polaritons have received much attention over the last decades in photonics or nanotechnology due to their inherent high sensitivity to metal surface variations (e.g…

physics.optics2024★ 4 cited

Generalized flux trajectories: New insights into partially coherent Airy beams

A. S. Sanz, R. Martínez-Herrero

The propagation of Airy beams in free space is characterized by being non dispersive, which warrants the shape invariance of their intensity distribution, and self-accelerating alo…

quant-ph2023★ 5 cited

Exploring the nonclassical dynamics of the "classical" Schrödinger equation

David Navia, Ángel S. Sanz

The introduction of nonlinearities in the Schrödinger equation has been considered in the literature as an effective manner to describe the action of external environments or mean…

quant-ph2023

A quantum trajectory analysis of singular wave functions

A. S. Sanz, L. L. Sanchez-Soto, A. Aiello

The Schrödinger equation admits smooth and finite solutions that spontaneously evolve into a singularity, even for a free particle. This blowup is generally ascribed to the intrins…

quant-ph2021★ 3 cited

Robust quantum metrology with random Majorana constellations

A. Z. Goldberg, J. R. Hervas, Ángel S Sanz +8

Even the most classical states are still governed by quantum theory. A number of physical systems can be described by their Majorana constellations of points on the surface of a sp…

quant-ph2021★ 19 cited

Taming singularities of the quantum Fisher information

Aaron Z. Goldberg, José L. Romero, Ángel S. Sanz +1

Quantum Fisher information matrices (QFIMs) are fundamental to estimation theory: they encode the ultimate limit for the sensitivity with which a set of parameters can be estimated…