Generating mesoscopic Bell states via collisions of distinguishable quantum bright solitons.
Generating mesoscopic Bell states via collisions of distinguishable quantum bright solitons.
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DOI：
10.1103/physrevlett.111.100406
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发表时间：
2013-01
影响因子：
8.6
通讯作者：
B. Gertjerenken;T. Billam;Caroline L. Blackley;C. Ruth;Le Sueur;L. Khaykovich;S. Cornish;C. Weiss
中科院分区：
文献类型：
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作者：
B. Gertjerenken;T. Billam;Caroline L. Blackley;C. Ruth;Le Sueur;L. Khaykovich;S. Cornish;C. Weiss
我们对一维谐波陷阱中两个可区分的量子物质波亮孤子的碰撞进行了数值研究。我们证明，这种碰撞可以用来生成介观贝尔态，可以可靠地将其与统计混合区分开来。相关 s 波散射长度的计算预测，这种状态有可能在 85Rb 和 133Cs 的量子简并混合物中实现。除了对两个可区分的双粒子孤子进行完全量子模拟之外，我们还使用平均场描述，并辅以孤子质心量子涨落的随机处理：通过与量子多粒子问题的数学上严格的有效潜在处理进行比较，我们证明了这种方法的有效性。
We investigate numerically the collisions of two distinguishable quantum matter-wave bright solitons in a one-dimensional harmonic trap. We show that such collisions can be used to generate mesoscopic Bell states that can reliably be distinguished from statistical mixtures. Calculation of the relevant s-wave scattering lengths predicts that such states could potentially be realized in quantum-degenerate mixtures of 85Rb and 133Cs. In addition to fully quantum simulations for two distinguishable two-particle solitons, we use a mean-field description supplemented by a stochastic treatment of quantum fluctuations in the soliton's center of mass: we demonstrate the validity of this approach by comparison to a mathematically rigorous effective potential treatment of the quantum many-particle problem.