Speaker
Description
Abstract
Precise manipulation of ultracold atoms is one of powerful methods for investigation of complicated fields as a quantum senser. We have investigated interactions between a dielectric surface and atoms [1, 2], and manipulation of cold atoms by optical dipole and radiative forces [3].
In this study, we have experimentally observed the loading behaviors of ultracold rubidium atoms into the dielectric surface region. The pre-cold atoms are loaded into an optical dipole trap and vertically transported to dielectric surface region by controlling the focus position of the trapping beam with a motorized stage. In the surface region, the trapping beam is reflected and forms standing waves.
We have experimentally observed the effective loading ultracold atoms with a temperature of 10$\mu$K into the standing wave potential which suppresses the atom loss and the oscillation behavior. These results indicate initially trapped atom in the standing wave with high phase-space-density condition and lead into Bose-Einstein condensate in the vicinity of the dielectric surface.
References
[1] Athanasios Laliotis, Bing-Sui Lu, Martial Ducloy, and David Wilkowski, AVS Quantum Sci. 3 043501 (2021).
[2]Kosuke Shibata, Satoshi Tojo, and Daniel Bloch, Optics Express 25 9476 (2017).
[3] Taro Mashimo, Masashi Abe, and Satoshi Tojo. Phys. Rev. A 100, 063426 (2019).
