Freiburg 2019 – scientific programme

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FM: Fall Meeting

FM 76: Entanglement: Spectroscopy

FM 76.4: Talk

Thursday, September 26, 2019, 15:00–15:15, 1015

Nonlinear spectroscopy with nonclassical light — •Fabiano Lever and Markus Ghuer — Universitaet Potsdam

In this work, we explore the quantum-classical transition comparing a classical pump-probe experiment on a diatomic molecule to its quantum enhanced counterpart, where the pump and probe pulses are substitued by the signal and idler beams of a SPDC source.

Two photon absoption of biphotons generated with Spontaneous Parametric Down Conversion (SPDC) exploits quantum time-energy correlations to enhance the overall yeld and selectivity of the process, when compared with a classical pump-probe setup, while mantaining femtosecond time resolution. The results indicate that the quantum improvements in yeld are caused by a more efficient use of the total power available for the process.