Close to massive objects, spacetime curvature bends light trajectories, giving rise to dramatic phenomena such as black holes and gravitational waves. Similarly, the quantum world of electrons possesses a geometric structure, encoded in their wavefunctions and captured by quantities like the quantum metric and Berry curvature. Such a quantum geometrical structure, studied as quantum metric and Berry curvature, can reshape an electron’s behaviors in nontrivial ways.
Quantum geometry also has a deep relation with topological phases of matter, which have taken center stage in condensed matter over the past decade. In this talk, I will show several examples how quantum geometry can strongly modify the electronic response to external electromagnetic waves and give rise to a wide range of previously unexplored nonlinear responses.
Coffee, tea and cake will be served at 1:45 pm.
If you prefer to participate via Zoom, please, feel free to join the colloquium via Zoom:
https://uni-hamburg.zoom.us/j/65015989339?pwd=U1IwdkF2OHQwK09senduU2FYQmVLQT09
Meeting-ID: 650 1598 9339
Kenncode: 14361263
IMPORTANT INFORMATION: The Hamburg Photon Science Colloquium will be put on video using the recording function of zoom. When recording is started a pop-up window appears and you have the choice to continue your participation or to leave the meeting; by continuing your participation you consent to recording.