Programme

P.23 -- Poster, VCTP-44

Date: Tuesday, 30 July 2019

Time: 08:30 - 10:00

Classical interpretation of dynamics of ultracold atoms in the titled optical lattice

A. T. Nguyen (1,2), Ho Hoang Huy (3), Tomotake Yamakoshi (4), Duc Anh Dinh (5), T. V. N. Hao (6), Vinh N. T. Pham (3)

(1) Department of Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam (2) Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam (3) Ho Chi Minh City University of Education, Ho Chi Minh City 748342, Vietnam (4) Institute for Laser Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182 – 8585, Japan (5) NTT Hi-Tech Instititue, Nguyen Tat Thanh Univerity, Ho Chi Minh City 700000, Vietnam (6) Faculty of Physics, University of Education, Hue University 34 Le Loi Street, Hue City, Vietnam

In this paper, we study the dynamics of ultracold Rb$^{87}$ under the influence of the tilted optical lattice via the Bloch oscillation phenomenon under the single-band approximation. By simulating the intraband dynamics of wave packet in position and momentum spaces, the dependencies of the amplitude and the period of the oscillation on the tilted coefficient and the lattice height are shown and compared with the classical theory under the tight-binding approximation. Therefore, the limit of the single-band approximation where Landau-Zener tunneling is neglected is verified.

Presenter: Pham Nguyen Thanh Vinh