Hamburg Photon Science Colloquium | Light-matter inter-actions through the quantum geometric lens

by Qiong Ma (Boston College, Chestnut Hill, MA, USA)

Friday 23 May 2025, 14:00 → 15:30 Europe/Berlin

SemR I-III (CFEL, Bldg. 99)

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.