The impact of spatial correlation on the tunneling dynamics of few-boson mixtures in a combined triple well and harmonic trap
The impact of spatial correlation on the tunneling dynamics of few-boson mixtures in a combined triple well and harmonic trap
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DOI：
10.1088/1367-2630/14/9/093011
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发表时间：
2011-12
影响因子：
3.3
通讯作者：
Lushuai Cao;I. Brouzos;B. Chatterjee;P. Schmelcher
中科院分区：
文献类型：
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作者：
Lushuai Cao;I. Brouzos;B. Chatterjee;P. Schmelcher
本文研究了一维三重势阱和谐振子势阱中两组分少玻色子混合体的隧穿性质。该混合物是在初始状态下制备的，其中一种物质具有很强的空间相关性，而另一种物质具有完全的本地化。我们观察到一个相关诱导的隧穿过程中的弱种间相互作用制度。物种间相互作用的发生扰乱了一个物种的空间相关性，并诱导相关的威尔斯之间的隧穿过程。相应的隧穿特性可以通过与基本机制的空间相关性来控制，该机制本质上不同于众所周知的共振隧穿过程。我们还观察和分析了两个物种的相关隧穿在中间种间相互作用制度和隧穿通过更高的带态强相互作用。
We investigate the tunneling properties of a two-species few-boson mixture in a one-dimensional triple well and harmonic trap. The mixture is prepared in an initial state with a strong spatial correlation for one species and complete localization of the other species. We observe a correlation-induced tunneling process in the weak interspecies interaction regime. The onset of the interspecies interaction disturbs the spatial correlations of one species and induces a tunneling process between the correlated wells. The corresponding tunneling properties can be controlled by the spatial correlations with an underlying mechanism that is inherently different from the well-known resonant tunneling process. We also observe and analyze the correlated tunneling of both species in the intermediate interspecies interaction regime and the tunneling via higher band states for strong interactions.