Quantum critical region of ultracold Bose gases exhibiting universal density-probability distribution after free expansion
Quantum critical region of ultracold Bose gases exhibiting universal density-probability distribution after free expansion
复制标题
超冷玻色气体的量子临界区在自由膨胀后表现出普遍的密度概率分布
DOI:
10.1088/1367-2630/17/6/063015
复制
发表时间:
2015-06
影响因子:
3.3
通讯作者:
Lu, Baolong
中科院分区:
文献类型:
--
作者:
Sun, Chao;Xiong, Dezhi;Xiong, Hongwei;Lu, Baolong
We report the observation of a universal behavior of ultracold quantum critical (QC) Bose gases trapped in a one-dimensional optical lattice. We extract the density probability distributions from the measured atomic density of the rubidium Bose gases after a free expansion time. The density probability is found to follow a simple exponential law once the lattice system has entered the QC region above the Berezinskii–Kosterlitz–Thouless transition. We show that, in addition to relative phase fluctuations between the subcondensates in different lattice wells, there also exist spatial phase fluctuations within single lattice wells in this QC region. The universal density-probability distribution can thus be well understood by a simple theoretical model taking into account these two kinds of phase fluctuations.
登录
查看更多内容
影响因子:
2.9
作者:
Xiong, Hongwei;Cao, Lijuan;Wang, Bing;Tan, Xinzhou;Lue, Baolong
通讯作者:
Lue, Baolong
影响因子:
8.6
作者:
Min-Chul Cha;Ji-Woo Lee
通讯作者:
Min-Chul Cha;Ji-Woo Lee
影响因子:
1.8
作者:
N. Mott
通讯作者:
N. Mott
DOI:
10.1007/978-981-15-2580-3_3
发表时间:
2020-01
期刊:
Quantum Many-Body Physics in Open Systems: Measurement and Strong Correlations
影响因子:
--
作者:
Yuto Ashida
通讯作者:
Yuto Ashida
影响因子:
1.8
作者:
S. Burger;F. Cataliotti;C. Fort;P. Maddaloni;F. Minardi;M. Inguscio
通讯作者:
S. Burger;F. Cataliotti;C. Fort;P. Maddaloni;F. Minardi;M. Inguscio