论文标题
旋转轨耦合的玻色子凝结物中的可调能级反转
Tunable energy-level inversion in spin-orbit-coupled Bose-Einstein condensates
论文作者
论文摘要
在梯度磁场和谐波振荡器（HO）诱捕电位的作用下，一种实现一维自旋轨道（SO）耦合的两组分子玻璃纤维凝结物（SO）耦合的两组分子凝结物冷凝物的方法的方法。系统的线性版本得到了准确求解。通过调节如此耦合的强度和磁场梯度，能量级反转使得可以将任何激发态转换为基态。完整的非线性系统通过数值求解，发现结果与排斥性组分间相互作用的线性预测一致。另一方面，组成的吸引力产生了叠加和边缘类型的状态。该系统还报告了类似的结果，其HO陷阱被盒子电势取代。这些结果表明有可能实现任何激发态并在实验中观察它。
A method to realize controllable inversion of energy levels in a one-dimensional spin-orbit (SO)-coupled two-component Bose-Einstein condensate under the action of a gradient magnetic field and harmonic-oscillator (HO) trapping potential is proposed. The linear version of the system is solved exactly. By adjusting the SO coupling strength and magnetic-field gradient, the energy-level inversion makes it possible to transform any excited state into the ground state. The full nonlinear system is solved numerically, and it is found that the results are consistent with the linear prediction in the case of the repulsive inter-component interaction. On the other hand, the inter-component attraction gives rise to states of superposition and edge types. Similar results are also reported for the system with the HO trap replaced by the box potential. These results suggest a possibility to realize any excited state and observe it in the experiment.
