Working principle of the QFRS. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Working principle of the QFRS.

Caption

(a) Schematic of entangled twin photons as ultrafast probe for molecules, where the parametric down conversion through a beta barium borate (BBO) crystal and multi-photon detection are presented. (b) Level scheme of microscopic model in Quantum FAST CARS. (c) Quantum FAST CARS signal, taking the 4 Raman-active modes A1, E and T2 in methane (CH4). (d) Level scheme of microscopic model in QFRS for electronically excited states. (e) Comparison between Intensity-correlated QFRS and classical probe pulse case for the time-evolving electronic coherence as a function of the delay T between the probe photons and the resonant pump pulse.

Credit

by Zhedong Zhang, Tao Peng, Xiaoyu Nie, Girish S Agarwal, and Marlan O Scully

Usage Restrictions

Credit must be given to the creator.

License

CC BY

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.