Related Experiment Video
Updated: May 4, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Two-photon spectroscopy of excitons with entangled photons
Frank Schlawin1, Shaul Mukamel1
1Department of Chemistry, University of California, Irvine, California 92697-2025, USA.
Abstract:
The utility of quantum light as a spectroscopic tool is demonstrated for frequency-dispersed pump-probe, integrated pump-probe, and two-photon fluorescence signals which show Ramsey fringes. Simulations of the frequency-dispersed transmission of a broadband pulse of entangled photons interacting with a three-level model of matter reveal how the non-classical time-bandwidth properties of entangled photons can be used to disentangle congested spectra, and reveal otherwise unresolved features. Quantum light effects are most pronounced at weak intensities when entangled photon pairs are well separated, and are gradually diminished at higher intensities when different photon pairs overlap.
Related Concept Videos
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Molecular Spectroscopy: Absorption and Emission
Fluorescence and Phosphorescence: Instrumentation
UV–Vis Spectroscopy: Molecular Electronic Transitions
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

