当前位置: X-MOL 学术Phys. Rev. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Persistent Self-Induced Larmor Precession Evidenced through Periodic Revivals of Coherence
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-10-04 , DOI: 10.1103/physrevlett.129.155301
H Sigurdsson 1, 2 , I Gnusov 3 , S Alyatkin 3 , L Pickup 2 , N A Gippius 3 , P G Lagoudakis 2, 3 , A Askitopoulos 3, 4
Affiliation  

Interferometric measurements of an optically trapped exciton-polariton condensate reveal a regime where the condensate pseudo-spin precesses persistently within the driving optical pulse. For a single 20μs optical pulse, the condensate pseudo-spin undergoes over 105 full precessions with striking frequency stability. The emergence of the precession is traced to polariton nonlinear interactions that give rise to a self-induced out-of-plane magnetic field, which in turn drives the system spin dynamics. The Larmor precession frequency and trajectory are directly influenced by the condensate density, enabling the control of this effect with optical means. Our results accentuate the system’s potential for the realization of magnetometry devices and can lead to the emergence of spin-squeezed polariton condensates.

中文翻译:

通过相干性的周期性复兴证明了持续的自致拉莫尔进动

光学捕获的激子-极化子凝聚体的干涉测量揭示了凝聚体伪自旋在驱动光脉冲内持续进动的状态。对于单20μs光脉冲,凝聚赝自旋经历超过105具有惊人的频率稳定性的完整进动。进动的出现可追溯到极化子非线性相互作用,该相互作用产生自感应平面外磁场,进而驱动系统自旋动力学。拉莫尔进动频率和轨迹直接受冷凝物密度的影响,从而可以通过光学手段控制这种效应。我们的结果突出了该系统实现磁力测量装置的潜力,并可能导致自旋压缩极化子凝聚体的出现。
更新日期:2022-10-04
down
wechat
bug