TY - JOUR
T1 - Effects of Disorder on Quantum Correlation of Ultracold Bose Gases Released from a Two-Dimensional Optical Lattice
AU - Li , Yan
AU - Qiao , Nao-Sheng
JO - Journal of Atomic and Molecular Sciences
VL - 2
SP - 155
EP - 168
PY - 2013
DA - 2013/04
SN - 4
DO - http://doi.org/10.4208/jams.051412.060612a
UR - https://global-sci.org/intro/article_detail/jams/8244.html
KW - disorder, second-order correlation, ultracold atomic gases, optical lattice.
AB - <p style="text-align: justify;">High-order quantum correlation provides powerful methods to reveal the quantum many-body behavior of ultracold atomic gases. In this work, the second-order quantum correlation is adopted to study the many-body behavior of ultracold Bose gases in the presence of both a two-dimensional optical lattice and weak disorder. According to investigations, it is found that even a weak disorder plays a significant role in the quantum many-body behavior, which manifests itself through the second-order quantum correlation. With the Bogoliubov theory, our studies show that both interatomic interactions and weak disorder would destroy the first-order quantum coherence of the condensate because of the depletion, and the resulting depletion has significant characteristic in the second-order correlation of the system. &nbsp;</p>