Wiess School of Natural Sciences
#sliderCaption1 #sliderCaption2 #sliderCaption3 #sliderCaption4 #sliderCaption5 #sliderCaption6 #sliderCaption7 #sliderCaption8 #sliderCaption9 #sliderCaption10 #sliderCaption11 #sliderCaption12 #sliderCaption13 #sliderCaption14
Biochemistry & Cell Biology
Mathematics
Earth Science
Ecology & Evolutionary Biology
Chemistry
Physics & Astronomy
Kinesiology

AMO - QUANTUM TRANSPORT IN A SPIN ORBIT COUPLED BOSE-EINSTEIN CONDENSATE

Seminar

Physics & Astronomy

By: Yong P. Chen
Purdue University
When: Friday, May 26, 2017
4:00 PM - 5:00 PM
Where: Brockman Hall for Physics
200
Abstract: Coupling between different internal quantum states (pseudospins) and/or momentum states have been recently employed as a powerful tool to modify the energy-momentum kinetic energy dispersion of cold atoms to induce “synthetic” bandstructures, gauge fields and spin-orbit-coupling (SOC) for ultracold atoms. I will discuss recent experiments in my lab where we have employed a Rubdium-87 atomic Bose-Einstein condensates (BEC) in Raman-coupling-induced synthetic spin-orbit-coupled (SOC) bandstructures to study various quantum transport and quantum dynamics phenomena, including a tunable and time-resolved Landau-Zener interband transition acting also as a spin-resolved atomic beam splitter, Stuckelberg interferometer in momentum space (by engineering a pair of atomic beam splitters via time-modulated Raman coupling to create a new generation of SOC bands), and relaxation of spin current via collision and thermalization of colliding spinor BECs. Experiments on SOC quantum gases may provide a well-controlled playground of interests to both AMO physics (scattering and few-body processes) and condensed matter physics (superfluidity, spintronics, and topological phases).