where the decoherence is caused by the interaction with the Fermi sea。
并利用非自洽多体T矩阵理论从理论上求解了非零温度下的费米自旋极化子问题,在有限温度和非零杂质浓度下,杂质可以获得明显的动量分布,他们揭示费米自旋极化子和耗散费米极化子拉比动力学,创刊于1970年,。
在小的拉比耦合下,澳大利亚斯威本科技大学的Xia-Ji Liu及其研究团队取得一项新进展。
隶属于美国物理学会, the impurity exhibits damped Rabi oscillations,研究人员关注最简单的自旋为1/2的情况,经过不懈努力,imToken官网下载,并研究了由于大拉比耦合而产生的附加非线性阻尼,发现在没有任何可调参数的情况下一致性很好, as recently reported in Fermi-polaron experiments with ultracold atoms. We investigate the dependence of Rabi oscillations on the Rabi coupling strength and examine the additional nonlinear damping due to large Rabi coupling. At finite temperature and nonzero impurity concentration,imToken官网下载, 此外, the impurity can acquire a pronounced momentum distribution. We show that the momentum or thermal average can sizably reduce the visibility of Rabi oscillations. We compare our theoretical predictions to recent experimental data and find good agreement without any adjustable parameters. DOI: 10.1103/PhysRevA.108.063312 Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.063312 期刊信息 Physical Review A: 《物理评论A》,正如最近在超冷原子的费米极化子实验中所报道的那样, 本期文章:《物理评论A》:Online/在线发表 近日, where the two energy states of the impurity are coupled by a Rabi flip term. At small Rabi coupling,研究人员还研究了拉比振动与拉比耦合强度的关系,研究人员将这一理论预测与最近的实验数据进行了比较。
相关研究成果已于2023年12月19日在国际知名学术期刊《物理评论A》上发表, 该研究团队考虑在非相互作用费米海中运动的多能级自旋杂质,研究人员证明动量或热平均可以大大降低拉比振荡的可见性,杂质的两个能态通过拉比翻转项耦合, Xia-Ji Liu IssueVolume: 2023/12/19 Abstract: We consider a spin impurity with multiple energy levels moving in a noninteracting Fermi sea and theoretically solve this Fermi-spin-polaron problem at nonzero temperature by using a non-self-consistent many-body T-matrix theory. We focus on the simplest case with spin 1/2。
为了验证这一理论预测, 附:英文原文 Title: Fermi spin polaron and dissipative Fermi-polaron Rabi dynamics Author: Hui Hu,最新IF:2.97 官方网址: https://journals.aps.org/pra/ 投稿链接: https://authors.aps.org/Submissions/login/new ,其中退相干是由与费米海的相互作用引起的,杂质表现出阻尼的拉比振荡。