Affiliation:
1. Brescia University
2. European Laboratory for Nonlinear Spectroscopy (LENS)
3. NEST
Abstract
Strongly correlated Stokes and anti-Stokes photon pairs (biphotons) exhibiting very large generation rates and spectral brightnesses could be attained at extremely low pump powers and optical depths. This is realized via spontaneous four-wave mixing in cold atoms with enhanced nonlocal (Rydberg) optical nonlinearities and prepared into a dark state with a large population imbalance. The scheme works with all light fields on resonance yet with negligible linear absorption and Raman gain.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Italian PNRR MUR
Subject
Atomic and Molecular Physics, and Optics