Phase diffusion of a two-component Bose-Einstein condensates: exact and short-time solutions for arbitrary coherent spin state
Phase diffusion of a two-component Bose-Einstein condensates: exact and short-time solutions for arbitrary coherent spin state
复制标题
二元玻色-爱因斯坦凝聚体的相扩散：任意相干自旋态的精确短时解
DOI：
10.1088/1674-1056/19/2/020502
复制
发表时间：
2010-11
影响因子：
1.7
通讯作者：
金光日
中科院分区：
文献类型：
--
作者：
金光日
本文研究了两组分玻色-爱因斯坦凝聚在任意相干自旋态下的相扩散。|\theta_0，\phi_0\rangle $.给出了$\theta_0\neq\pi/2$情况下相扩散时间的解析表达式。与对称情况（即，$\theta_0 =\pi/2$），我们发现由于原子数方差的减小，扩散过程变得缓慢。
We investigate phase diffusion of a two-component Bose-Einstein condensates prepared initially in arbitrary coherent spin state $|\theta_0,\phi_0\rangle$. Analytical expression of the phase-diffusion time is presented for $\theta_0\neq\pi/2$ case. In comparison with the symmetrical case (i.e., $\theta_0=\pi/2$), we find that the diffusion process becomes slowly due to the reduced atom number variance.