Overview
- Manuel Fernández Guasti’s team measured position and momentum in the same space–time region using two stabilized lasers and a fast photon-counting camera.
- Varying an aperture from 0.36 to 10 millimeters produced data showing the expected trade-off: tighter position implies greater momentum uncertainty, and vice versa.
- The detector registered light within an area of about 8 millimeters, enabling concurrent readouts at one location.
- Results were published in Physics Letters A, with the authors describing a technique that could probe the quantum–classical boundary and support quantum metrology.
- The project spanned seven years and credits collaborators Carlos Mario García Guerrero and Ruth Diamant Adler at UAM-Iztapalapa’s quantum optics lab.