Sub-cycle multidimensional spectroscopy of strongly correlated materials

TYPESolid State Institute Seminar
Speaker:Prof. Olga Smirnova
Affiliation:Technical University of Berlin and Max-Born-Institute, Germany
Date:08.02.2023
Time:12:30 - 13:30
Location:Solid State Auditorium(Entrance)
Remark:Host: Professor Oren Cohen
Presentation:
Abstract:

Strongly correlated solids are extremely complex and fascinating quantum systems, where new states continue to emerge and where interaction with light may trigger interplay between them. In this interplay, sub-laser-cycle electron response is particularly attractive as a tool for ultrafast manipulation of matter at PHz scale.

We introduce a new type of non-linear multidimensional spectroscopy, which allows us to unravel the sub-cycle dynamics of strongly correlated systems interacting with few-cycle infrared pulses and the complex interplay between different correlated states evolving on the sub-femtosecond time-scale. We demonstrate that single particle sub-cycle electronic response is extremely sensitive to correlated many-body dynamics and provides direct access to many body response functions.

 

For the two-dimensional Hubbard model under the influence of ultra-short, intense electric field transients, we demonstrate that our approach can resolve pathways of charge and energy flow between localized and delocalized many-body states on the sub-cycle timescale and follow the creation of a highly correlated state surviving after the end of the laser pulse. Our findings open a way to a regime of imaging and manipulating strongly correlated materials at optical rates, beyond the multi-cycle approach employed in Floquet engineering with the sub-cycle response being a key tool for accessing many body phenomena.

 

https://technion.zoom.us/j/95124874059