论文标题
费米极性人中量子相干性的二维光谱诊断
Two-dimensional spectroscopic diagnosis of quantum coherence in Fermi polarons
论文作者
论文摘要
我们介绍了Fermi Polarons最近提供的非线性二维光谱的完整微观多体计算，并表明从未在实验中检查的有吸引力和排斥极性之间的量子相干性可以通过在两种异性峰crossectional crossed twimements in Twimemens in Twimemens of Becters in Twomementim septiments septiments septiments septimentim septimentim septimentim septimentim septimentim septimentim septimentim bects septimentim septiment。我们预测，粒子孔激发使两个交叉峰不对称，并导致对角线排斥极峰附近的另一个侧峰。我们的模拟光谱可以在未来的冷原子实验中很容易检查，其中可以通过在时域中使用RFF脉冲的Ramsey干扰序列来实现二维光谱。我们的结果还提供了对掺杂的单层金属二分法中近期相互作用激子和Trions的最新二维相干光谱的第一本理解。
We present a full microscopic many-body calculation of a recently-proposed nonlinear two-dimensional spectroscopy for Fermi polarons, and show that the quantum coherence between the attractive and repulsive polarons, which has never been experimentally examined, can be unambiguously revealed via quantum beats at the two off-diagonal crosspeaks in the two-dimensional spectrum. We predict that particle-hole excitations make the two crosspeaks asymmetric and lead to an additional side peak near the diagonal repulsive polaron peak. Our simulated spectra can be readily examined in future cold-atom experiments, where the two-dimensional spectroscopy is to be implemented by using a Ramsey interference sequence of rf pulses in the time domain. Our results also provide a first-principle understanding of the recent two-dimensional coherent spectroscopy of interacting excitons and trions in doped monolayer transition metal dichalcogenides.
