论文标题
与格子孤子的大规模粒子干涉法
Massive particle interferometry with lattice solitons
论文作者
论文摘要
我们讨论了一种干涉方案，该方案采用了晶状体上吸引玻色子在晶格上的特定结合状态的干扰。我们重新审视了Castin和Weiss的提议[物理学。莱特牧师。卷。 102，010403（2009）]用于在屏障上使用量子物质波孔的散射，以创建一个完全在屏障的左侧，完全在屏障的右边。在该提议中，假定散射是完全弹性的，即soliton的质量动能低于孤子的化学电位。在这里，我们放松了这个假设：通过使用Bethe Ansatz和基于DMRG的组合对适当多体系统的动力学进行分析，我们发现，即使Soliton的质量动能也超过了其完全解离构成构成原子所需的能量，干涉条纹仍持续存在。
We discuss an interferometric scheme employing interference of bright solitons formed as specific bound states of attracting bosons on a lattice. We revisit the proposal of Castin and Weiss [Phys. Rev. Lett. vol. 102, 010403 (2009)] for using the scattering of a quantum matter-wave soliton on a barrier in order to create a coherent superposition state of the soliton being entirely to the left of the barrier and being entirely to the right of the barrier. In that proposal, it was assumed that the scattering is perfectly elastic, i.e.\ that the center-of-mass kinetic energy of the soliton is lower than the chemical potential of the soliton. Here we relax this assumption: By employing a combination of Bethe ansatz and DMRG based analysis of the dynamics of the appropriate many-body system, we find that the interferometric fringes persist even when the center-of-mass kinetic energy of the soliton is above the energy needed for its complete dissociation into constituent atoms.
