Probing polariton dynamics in trapped ions with phase-coherent two-dimensional spectroscopy.
Probing polariton dynamics in trapped ions with phase-coherent two-dimensional spectroscopy.
复制标题
用相位相干二维光谱探测捕获离子中的极化子动力学。
DOI：
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发表时间：
2015
影响因子：
4.4
通讯作者：
A. Buchleitner
中科院分区：
文献类型：
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作者：
M. Gessner;F. Schlawin;A. Buchleitner
我们设计了一个相位相干的三脉冲方案来探测囚禁离子量子模拟中的极化激元动力学。与传统的非线性信号相比，所提出的方案不改变系统中激励的数量，允许在N-激励流形内的动态调查。在填充因子1（N离子链中的N个激发）的特定情况下，所提出的相互作用诱导离域声子超流和局部原子绝缘体相之间的相干跃迁。一个两离子链的数值模拟表明，所得到的二维光谱允许明确识别的不同阶段，和二维线的形状有效地表征相关的退相干机制。
We devise a phase-coherent three-pulse protocol to probe the polariton dynamics in a trapped-ion quantum simulation. In contrast to conventional nonlinear signals, the presented scheme does not change the number of excitations in the system, allowing for the investigation of the dynamics within an N-excitation manifold. In the particular case of a filling factor one (N excitations in an N-ion chain), the proposed interaction induces coherent transitions between a delocalized phonon superfluid and a localized atomic insulator phase. Numerical simulations of a two-ion chain demonstrate that the resulting two-dimensional spectra allow for the unambiguous identification of the distinct phases, and the two-dimensional line shapes efficiently characterize the relevant decoherence mechanism.