Ultra-fast optical way to extract critical information from quantum materials

Topological insulators are quantum materials, which, due to their exotic electronic structure, on surfaces and edges conduct electric current like metal, while acting as an insulator in bulk. Scientists have now demonstrated how to tell apart topological materials from their regular -- trivial -- counterparts within a millionth of a billionth of a second by probing it with ultra-fast laser light.

from Top Technology News -- ScienceDaily https://ift.tt/2po9go5