Multi-Dimensional Spectroscopy with Intense Entangled Beams : Entanglement-Enabled Phase Matching in a Collinear Beam Geometry
The experimental realization of quantum molecular spectroscopy with entangled photons remains challenging owing to the low signal-to-noise ratio resulting from the use of low-flux entangled photons. High-flux entangled photons via intense entangled beams can be used to improve the signal-to-noise ratio, but the presence of unentangled photons contaminates the quantum signal stemming from entangled
