Group seminar at LMU and Zoom: Expansion dynamics of a shell-shaped Bose-Einstein condensate

Jia Fan, CQT Singapore
Group seminar at LMU seminar room and Zoom
Tuesday,  January, 16 at 9:00am (MEZ)

Abstract: Expansion dynamics of a shell-shaped Bose-Einstein condensate

Bose-Einstein condensates (BECs) confined on shell-shaped surfaces have been proposed as a platform for exploring many nontrivial quantum phenomena on curved spaces. However, as the shell-shaped trapping potential generated with the conventional radio frequency dressing method is very sensitive to gravity, so far experimental studies of shell BECs can only be performed in micro-gravity environments. In the talk, I will introduce our work at CUHK on creating shell shaped BECs in a magic wavelength optical trap. To resolve the central structure of the shell, a thin light sheet optical pumping beam was designed. We explored the co-expansion dynamics of the filled shell after releasing the mixture from trap.  By removing the inner BECs during the co-expansion, we also observed self-interference patterns on the isolated shell.