Quantum dynamics in the bosonic Josephson junction
Quantum dynamics in the bosonic Josephson junction
复制标题
DOI：
10.1103/physreva.82.053617
复制
发表时间：
2010-11-17
影响因子：
2.9
通讯作者：
Cohen, Doron
中科院分区：
文献类型：
--
作者：
Chuchem, Maya;Smith-Mannschott, Katrina;Cohen, Doron
本文利用半经典图像研究了不同初始条件下玻色约瑟夫森结的动力学行为。相位扩散的相干准备在约瑟夫森制度取决于两个冷凝物之间的初始相对相位。对于最初的非相干凝聚体，我们发现一个普遍的价值的相干性的约瑟夫森政权的建设。此外，我们对比两个看似相似的分界线相干准备，发现显着的差异，他们的收敛经典粒子的数量增加。
We employ a semiclassical picture to study dynamics in a bosonic Josephson junction with various initial conditions. Phase diffusion of coherent preparations in the Josephson regime is shown to depend on the initial relative phase between the two condensates. For initially incoherent condensates, we find a universal value for the buildup of coherence in the Josephson regime. In addition, we contrast two seemingly similar on-separatrix coherent preparations, finding striking differences in their convergence to classicality as the number of particles increases.