Rostock 2019 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 8: Quantum Optics and Photonics I

Q 8.7: Talk

Monday, March 11, 2019, 12:00–12:15, S Ex 04 E-Tech

Nonlinear spectroscopy with nonclassical light — •Fabiano Lever and Markus Gühr — Universität Potsdam, Institut für Physik und Astronomie

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. In this work, we explore the quantum-classical transition comparing a classical pump-probe exper- iment 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. The results indicate that the quantum improvements in yeld are caused by a more efficient use of the total power available for the process.