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arXiv 2007.08737cond-mat.quant-gas
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激子-极化激元凝聚体的泵浦辅助多稳态

Pumping-assisted multistability of exciton-polariton condensates

Zi-Fa Yu, Ju-Kui Xue, Lin Zhuang, Jinkui Zhao, Wu-Ming Liu

摘要:

研究了非共振泵浦下激子-极化激元凝聚体的多稳态性质。泵浦功率的增加使系统远离非厄米谱简并,通过一个例外点朝向谱分裂,这引起从单稳态到多稳态的转变。在多稳态区域,系统包含一个稳态和两个亚稳态。稳定性分析表明,亚稳态保持有限的寿命,并最终演化到稳态。在吸引极化激元-极化激元相互作用中,发现了不同于一般单峰孤子的多峰孤子稳态。此外,我们描绘了全参数空间的多稳定性图,以准确地操纵多稳定性。我们的研究结果为控制非厄米量子多稳态提供了令人兴奋的可能性,这可能有助于设计利用光学多稳态的基于极化激元的器件。

英文摘要:

We investigate the multistability of exciton-polariton condensates excited by a nonresonant pump. An increase in pumping power moves the system away from non-Hermitian spectral degeneracy towards spectrum splitting through an exceptional point, which induces a transition from monostability to multistability. In the region of multistability, the system contains one steady and two metastable states. The analyses of stability show that metastable states maintain a finite lifetime and eventually evolve to steady states. A steady state with multi-peak soliton different from general single-peak soliton is discovered for attractive polariton-polariton interaction. Moreover, we depict the diagram of the multistability in full parameter space to accurately manipulate the multistability. Our results open up exciting possibilities for controlling non-Hermitian quantum multistable states, which may be useful to designing polariton-based devices exploiting optical multistability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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