论文标题
部分可观测时空混沌系统的无模型预测
Deterministic distribution of orbital angular momentum multiplexed continuous-variable entanglement and quantum steering
论文作者
论文摘要
轨道角动量（OAM）多路复用提供了一种有效的方法来提高各种量子通信协议中的数据携带能力。这是将OAM多路复用量子资源分配到量子通道中以实现量子通信的先决条件。但是，OAM多路复用光场的量子转向以及通道噪声对OAM多路复用量子资源的影响尚不清楚。在这里，我们生成OAM多路复用的连续变量（CV）纠缠状态，并以有损或嘈杂的通道分配它们。我们表明，携带拓扑费用的OAM多路复用状态的纠缠和量子转向的破裂属性$ L = 1 $，$ L = 2 $与具有$ L = 0 $ in Lossy and Losisy频道的高斯模式相同。在存在过量噪声的情况下，观察到高阶OAM多路复用状态的纠缠和量子转向的突然死亡。我们的结果表明，通过使用OAM多路复用的CV纠缠状态实现高数据携带能力量子信息处理的可行性。
Orbital angular momentum (OAM) multiplexing provides an efficient method to improve data-carrying capacity in various quantum communication protocols. It is a precondition to distribute OAM multiplexed quantum resources in quantum channels for implementing quantum communication. However, quantum steering of OAM multiplexed optical fields and the effect of channel noise on OAM multiplexed quantum resources remain unclear. Here, we generate OAM multiplexed continuous-variable (CV) entangled states and distribute them in lossy or noisy channels. We show that the decoherence property of entanglement and quantum steering of the OAM multiplexed states carrying topological charges $l=1$ and $l=2$ are the same as that of the Gaussian mode with $l=0$ in lossy and noisy channels. The sudden death of entanglement and quantum steering of high-order OAM multiplexed states is observed in the presence of excess noise. Our results demonstrate the feasibility to realize high data-carrying capacity quantum information processing by utilizing OAM multiplexed CV entangled states.
