Theoretical analysis of super-Bloch oscillations
Theoretical analysis of super-Bloch oscillations
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DOI：
10.1103/physreva.83.053627
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发表时间：
2011-05-24
影响因子：
2.9
通讯作者：
Monteiro, T. S.
中科院分区：
文献类型：
--
作者：
Kudo, K.;Monteiro, T. S.
最近的几项研究研究了光学晶格中冷原子在交流强迫作用下的动力学。理论上预测的隧道振幅重整化已得到实验验证。最近的观测包括原子云的整体运动，例如巨大的“超级布洛赫振荡”（SBO）。我们表明，为了理解 SBO 无法解释的特征，除了隧道效应的重正化之外，还必须包括新的重要的相位校正。对于具有强吸引力相互作用的费米子系统，人们可以在束缚对和不成对原子之间设计不同类型的碰撞和再碰撞。
Several recent studies have investigated the dynamics of cold atoms in optical lattices subject to ac forcing; the theoretically predicted renormalization of the tunneling amplitudes has been verified experimentally. Recent observations include global motion of the atom cloud, such as giant "super-Bloch oscillations" (SBOs). We show that, in order to understand unexplained features of SBOs, in addition to the renormalization of the tunneling, a new and important phase correction must be included. For fermionic systems with strong attractive interactions, one may engineer different types of collisions and recollisions between bound-pairs and unpaired atoms.