Kirchhoff Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227, D-69120, Germany.
Phys Rev Lett. 2010 Nov 12;105(20):204101. doi: 10.1103/PhysRevLett.105.204101.
We report on the experimental demonstration of the internal bosonic Josephson effect in a rubidium spinor Bose-Einstein condensate. The measurement of the full time dynamics in phase space allows the characterization of the theoretically predicted π-phase modes and quantitatively confirms analytical predictions, revealing a classical bifurcation. Our results suggest that this system is a model system which can be tuned from classical to the quantum regime and thus is an important step towards the experimental investigation of entanglement generation close to critical points.
我们报告了在铷自旋玻色-爱因斯坦凝聚体中实验演示内秉玻色约瑟夫森效应的结果。在相空间中对全时动力学的测量使得能够对理论预测的π 相模式进行特征化，并定量证实了分析预测，揭示了经典分岔。我们的结果表明，该系统是一个可以从经典调谐到量子态的模型系统，因此是朝着在临界点附近进行纠缠生成的实验研究迈出的重要一步。
