标题： 费米子原子在光学晶格中的反馈冷却 显示英文标题

标题： Feedback cooling of fermionic atoms in optical lattices

摘要： 我们讨论通过基于测量的马尔可夫反馈控制，制备光学晶格中费米子超冷原子的拓扑绝缘体态。 设计的测量和反馈算符诱导了一个有效的耗散通道，该通道在精确或近似的情况下稳定所需的绝缘体态，当假设额外的实验约束时。 通过计算目标基态与反馈修改后的主方程稳态之间的保真度，在一维绝缘体以及哈德纳的陈绝缘体中展示了成功的态制备。 保真度是通过系统适度大小的时间演化获得的。 对于更大的二维系统，我们通过平均场动力学方程比较了基态和稳态的单粒子本征态的平均占据情况。 显示英文摘要

摘要： We discuss the preparation of topological insulator states with fermionic ultracold atoms in optical lattices by means of measurement-based Markovian feedback control. The designed measurement and feedback operators induce an effective dissipative channel that stabilizes the desired insulator state, either in an exact way or approximately in the case where additional experimental constraints are assumed. Successful state preparation is demonstrated in one-dimensional insulators as well as for Haldane's Chern insulator, by calculating the fidelity between the target ground state and the steady state of the feedback-modified master equation. The fidelity is obtained via time evolution of the system with moderate sizes. For larger 2D systems, we compare the mean occupation of the single-particle eigenstates for the ground and steady state computed through mean-field kinetic equations.