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Single molecular-excitation propagation in one-dimensional optical lattices

机译：一维光学格中的单分子激励传播

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摘要

We study a LiCs strongly-interacting molecular gas loaded on an one-dimensional optical latticekeeping one particle per site. The molecules are in the lowest electronic and vibrational (ν=0) state,Χ1Σ. Here, coherent transfers of rotational excitations (N={0,1}) along the lattice are shown for severallattice sizes and initial conditions. Due to the large intermolecular distance and low filling, the dipoledipoleinteraction in the nearest-neighbor approximation governs the dynamics of the rotationalexcitations. For low field strengths, the full set of internal rotational projections must be taken intoaccount. The generated von Neumann entanglement entropy throughout the dynamics of the energytransfer are also presented. A monotonic growth for short times and a saturation towards the steadyregime is observed, showing the potential of these molecular systems to be used in quantuminformation protocols. The numerical simulations are performed by means of the Time-Evolving BlockDecimation algorithm based on the Matrix Product State formalism and the Susuki-Trotterdecomposition.
机译：我们研究了每位颗粒的一维光学晶留在一维光学格子上的强烈相互作用的分子气体。分子是最低的电子和振动（ν= 0）状态，χ1σ。这里，针对SeverAllattice尺寸和初始条件示出了沿晶格的旋转激励（n = {0,1}）的相干转移。由于分子间距离和低填充，最近邻近的Dipoledipoleintaction控制旋​​转透视的动态。对于低场强，必须达到全套内部旋转投影。还介绍了在能量转换器的动态的生成的von neumann纠缠熵。观察到短时间的单调生长和饱和朝向正面静脉饱和，显示这些分子系统的潜力用于量素信息。通过基于矩阵产品状态形式主义和Susuki-trotterdecomposith的时间不断发展的块特定算法来执行数值模拟。

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