晶格调制光谱中相干双光子产生的理论描述
Theoretical Description of Coherent Doublon Creation via Lattice Modulation Spectroscopy
摘要:
利用最近发展起来的强耦合方法,我们提出了一个全面的理论,在一个具有陷阱的光晶格中的超冷费米子原子的三维系统的调制光谱的双光子产生过程。理论预测比较好的实验时间轨迹的doublon生产。对于实验可行的条件下,我们提供了一个定量预测的存在下,在强调制振幅的非线性“双光子”激发。
英文摘要:
Using a recently developed strong-coupling method, we present a comprehensive theory for doublon production processes in modulation spectroscopy of a three-dimensional system of ultracold fermionic atoms in an optical lattice with a trap. The theoretical predictions compare well to the experimental time traces of doublon production. For experimentally feasible conditions, we provide a quantitative prediction for the presence of a nonlinear "two-photon" excitation at strong modulation amplitudes.
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