论文标题
放松在扩展的骨髓约瑟夫森连接处
Relaxation in an Extended Bosonic Josephson Junction
论文作者
论文摘要
我们对扩展的骨髓约瑟夫森连接处的松弛动力学进行了详细分析。我们表明，在三个空间维度中使用毛皮层的经典现场模拟使用了M. Pigneur等人的主要实验发现，Phys。莱特牧师。 120，173601（2018）。我们给出了一个分析解决方案，描述了通过多模词的短时演变。在更长的时间内，观察到的对相锁定状态的松弛是由超出正弦模型的非线性动力学引起的，该模型是由纵向限制电位引起的，即使在零温度下也持续存在。最后，我们分析了不同的实验相关诱捕几何形状以减轻这些影响。我们的结果为未来的实验实施提供了基础，旨在研究扩展的骨骨约瑟夫森连接中放松的非线性和量子效应。
We present a detailed analysis of the relaxation dynamics in an extended bosonic Josephson junction. We show that stochastic classical field simulations using Gross-Pitaevskii equations in three spatial dimensions reproduce the main experimental findings of M. Pigneur et al., Phys. Rev. Lett. 120, 173601 (2018). We give an analytic solution describing the short time evolution through multimode dephasing. For longer times, the observed relaxation to a phase locked state is caused by nonlinear dynamics beyond the sine-Gordon model, induced by the longitudinal confinement potential and persisting even at zero temperature. Finally, we analyze different experimentally relevant trapping geometries to mitigate these effects. Our results provide the basis for future experimental implementations aiming to study nonlinear and quantum effects of the relaxation in extended bosonic Josephson junctions.
