AI 中文总结
该研究针对Bi/Ag(111)二维电子气体系，探究Rashba自旋轨道相互作用强度与电子间距对量子关联的影响，发现量子关联随RSOI强度非单调变化，确立RSOI为稳定量子特性的关键控制参数。
AI 中文摘要
我们研究二维电子气（2DEG）中两个电子间的量子导引与非局域关联，其随Rashba自旋轨道相互作用（RSOI）强度和电子间间距变化的规律。我们特别关注具有强RSOI（α₀=3.05×10⁻¹¹ eV·m）的Bi/Ag(111)体系，探究调节RSOI强度和电子间距离对Bell非局域性、不确定度诱导非局域性及导引动力学的影响。研究发现，尽管增大α_R初始会抑制量子关联，但这三个度量指标随α_R呈现非单调恢复，在考虑的电子间间距范围内，均在最优耦合强度α_R=4.32×10⁻¹¹ eV·m附近达到峰值。该发现确立RSOI为二维电子气中稳定量子特性的关键控制参数，可抵消量子关联随电子间间距的衰减，表明Bi/Ag(111)体系内量子资源的抑制与恢复可通过调节电子间距离并精细调控RSOI强度实现。
英文摘要
We investigate quantum steering and nonlocal correlations between two electrons in a two-dimensional electron gas (2DEG) as functions of Rashba spin-orbit interaction (RSOI) strength and inter-electron separation. We focus particularly on the Bi/Ag(111) system characterized by its strong RSOI ($α_0 = 3.05\times10^{-11}$ eV~m), and we explore the influence of tuning intensity of RSOI and inter-electron distance on the dynamics of Bell nonlocality, uncertainty-induced nonlocality and steering. We find that, although increasing $α_R$ initially suppresses quantum correlations, all three metrics exhibit a non-monotonic recovery as functions of $α_R$, peaking near an optimal coupling strength $α_R = 4.32\times10^{-11}$~eV~m across the range of inter-electron separations considered. This finding establishes RSOI as a critical control parameter for stabilizing quantum properties in two-dimensional electron gases against the decay of quantum correlations with inter-electron separation, and shows that the suppression and recovery of quantum resources within the Bi/Ag(111) system can be controlled by adjusting the inter-electron distance and carefully tuning the RSOI strength.
