Alessandra GATTI


Alessandra Gatti is a senior researcher of the Institute of Photonics and Nanotechnologies of CNR.

She graduated in Physics cum laude at the University of Milano, Italy, in 1993, and obtained her PhD in Physics from the same university in 1997. Since 1999 she has been a research staff member of the National Institute for the Physics of Matter, which in 2005 became part of CNR. In 2013 she qualified to full professorship in theoretical physics of matter (qualification renewed in 2019), and from 2013 to 2019 she has been adjunct professor of “Quantum Optics” at the University of Insubria in Como, Italy. She was in 2015 a visiting researcher at Institut Non Linéaire de Nice (France).

Since her PhD, she participated to several European projects, and was the scientific coordinator of the FP7 project HIDEAS, High Dimensional Entangled Systems (FET OPEN program, 2008-2012). She co-authored more than 150 scientific works, that received 6200-8000 citations, with a h-index 36-40 (ScopusGoogle Scholar 2023). Since 2014 she is a fellow of Optica (formerly Optical Society of America) «for pioneering contributions to the field of quantum imaging » and in 2013  received from the European Physical Society the Emmy Noether distinction for Women in Physics.

She conducts theoretical research in the fields of quantum and nonlinear optics. The focus is on the multimode and multipartite entangled states of light generated by broadband nonlinear optical processes, and to their applications to quantum imaging and sensing. In collaboration with different experimental groups,  she gave several contributions to the fields of quantum imaging and high dimensional entanglement of light, which include: the analysis of the borderline between the classical and quantum domains in the so-called ghost imaging technique; the introduction of differential ghost imaging and the demonstration of its use for efficient imaging in disordered media; the first demonstration in theory and experiments of a  spatial quantum correlation of the twin beams generated by parametric down-conversion; the theory of  sub-shot noise imaging; the study and demonstration of the  X-entanglement, with its ultranarrow correlation time (few fs), of twin beams generated by down-conversion.

Her current research projects focus on:

  • Enhancing nonlinear interactions (multiphoton absorption, Raman scattering, second-harmonic generation …) by light entanglement, for applications to entangled 2-photon and SHG microscopy.
  • Frequency combs in Kerr resonators and in ring quantum cascade lasers. The goal is  to extend   the classical studies performed so far to quantum  models  and simulation for CV entanglement.

Research activity

Quantum optics and quantum information

Ultrafast Nonlinear optics

Research Unit


Contact Details

IFN-CNR, Politecnico di Milano

Piazza Leonardo da Vinci 32
20133 Milano, Italy
+39 02 2399 6556