[printer friendly version]

OSA Student Chapter Meeting



MAIN TALK
SPEAKER: Da-Wei Wang
TITLE: Da-Wei Wang
ABSTRACT:
We show that the timed Dicke states of a collection of three-level atoms can form a tight- binding lattice in the momentum space. This lattice, coined the superradiance lattice (SL), can be constructed based on an electromagnetically induced transparency (EIT) system. For a one-dimensional SL, we need the coupling field of the EIT system to be a standing wave. The detuning between the two components of the standing wave introduces an effective electric field. The quantum behaviors of electrons in lattices, such as Bloch oscillations, Wannier-Stark ladders, Bloch band collapsing and dynamic localization can be observed in the SL. The SL can be extended to two, three and even higher dimensions where no analogous real space lattices exist and new physics are waiting to be explored.

OPTICS NEWS
SPEAKER: Dawson Nodurft
TITLE: Externally Refueled Optical Filaments
Filament beam length in its propagation direction is limited by various dissipative processes. The authors show that by properly accompanying the filament with an auxiliary beam an order of magnitude increase in filament length is possible. This second beam acts as an energy reservoir for the filament.



Friday, April 04, 2014
IQSE 578, 11:30 noon
Mitchell Physics Building


Department of Physics and Astronomy
Institute for Quantum Science and Engineering
Texas A&M University

(Pizza lunch as usual. Newcomers welcome!)

Host: Ellie Figueroa