Scientists at Tokyo Institute of Technology and Keio University investigated the excitation and detection of photogenerated coherent phonons in polar semiconductor GaAs through an ultrafast dual pump-probe laser for quantum interferometry.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/2-alightmatter.jpg)
Source:
https://phys.org/news/2019-05-quantum-interferometry-reveals-chosen-pathway.html