This is a neat video introduction to exciton polaritons put out by a group at Sheffield University in the U.K.
Video credit goes to LDSD semiconductor research group of Sheffield University. Source
Polaritons Turning in a Gradient
The above image shows polaritons travelling in a gradient, starting by moving uphill and then stopping and reversing direction. The colorscale shows the polariton density.
Dr. David W. Snoke

David W. Snoke

Professor of Physics

Department of Physics and Astronomy
University of Pittsburgh

3941 O'Hara Street
Pittsburgh, PA 15260
  Office   Labs
Email:   snoke@pitt.edu Allen Hall:   G13, G16, G17
  (412) 624-9007 Phone/Fax:   (412) 624-7861
 Fax:   (412) 624-9163 OEH:   104,105,106
Room:   G10 Allen Hall Phone:   (412) 624-9475

Elected a Fellow of the American Physical Society in 2006, with the citation "For his pioneering work on the experimental and theoretical understanding of dynamical optical processes in semiconductor systems."

Fundamental Physics in Semiconductor Systems

There are many different goals in semiconductor physics. Some researchers aim at making new devices, and some aim at materials characterization. In our group we look at semiconductor structures as test beds for principles of fundamental physics. The quality of materials has improved over the past decades to the point that we can look at nearly "perfect" structures to understand basic concepts such as two-dimensional physics, the conductor-insulator phase transition, quantum phase transitions such as Bose-Einstein condensation, renormalized mass and energy of particles, nonequilibrium dynamics, dephasing, and control of quantum coherence.

Last Updated Nov. 7, 2007. Website by Ryan B.