论文标题
与晶格孤子的大量粒子干涉法：稳健性电离
Massive particle interferometry with lattice solitons: robustness against ionization
论文作者
论文摘要
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，即孤子的质量动能低于孤子的化学电位。在这里，我们放松这个假设。另外，我们引入了一种使用溶液干扰的干涉方案，该方案可用于检测孤子反射和透射部分之间的相干性程度。使用精确的对角度化，我们为由六个原子组成的孤子模拟了一个完整的干涉循环。我们发现，即使索利顿的质量中心动能超过将孤子完全解离成组成原子所需的能量，干涉条纹也持续存在。
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, is 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. Also, we introduce an interferometric scheme, which uses interference of soltions, that can be used to detect the degree of coherence between the reflected and transmitted part of the soliton. Using exact diagonalization, we numerically simulate a complete interferometric cycle for a soliton consisting of six atoms. We find that the interferometric fringes persist even when the center-of-mass kinetic energy of the soliton is above the energy needed for complete dissociation of the soliton into constituent atoms.
