Speaker
Gregory Schehr (LPHTE, Sorbonne Université, Paris)
Date & Time
Thu, 15 October 2026, 11:30 to 13:00
Venue
Emmy Noether Seminar Room
Resources
Abstract
Wavefront shaping allows one to focus light through strongly scattering media by controlling the incident wavefront. I will show that the optimal focusing problem can be formulated in terms of the largest eigenvalue of a transmission matrix, naturally connecting the experiment to random matrix theory. While the average focusing enhancement is remarkably well described by Wishart statistics, its fluctuations can become anomalously large, revealing long-range mesoscopic correlations in multiple scattering. Joint work with H. Yılmaz, Nat. Commun. 17, 10129 (2026).
Zoom Meeting: https://icts-res-in.zoom.us/j/94231001635?pwd=UbjIWbxPy4zJfxjhCNpTfHYx4QgyJs.1
Meeting ID: 942 3100 1635
Passcode: 151516