论文标题
在湍流介质中轨道角动量模式的传播时打击错误
Combating errors in propagation of orbital angular momentum modes of light in turbulent media
论文作者
论文摘要
使用这些研究的数据并概括了[Bala等，[Arxiv：2208.04555]中提出的框架，用于通过大气和海洋湍流进行轨道角动量（OAM）模式传播的大量模拟，实验和分析研究。首先，我们通过大气和海洋湍流确定了oaM模式传播的不变性，其中可以编码错误免疫信息。仔细查看数据揭示了两个通用特征：（i）连贯性在湍流中持续比纠缠更长的距离，并且（ii）不同的OAM模式之间的串扰非常弱地取决于弱的湍流状态中的初始OAM模式指数。请记住这些，我们接下来开发一种方法来打击我们所谓的理想串扰频道中的错误。在理想化的串扰通道中，交叉概率与初始模式索引（IMI）无关。我们制定了一个程序，该程序允许通过识别不变数量来检索状态的完整信息。最后，我们为理想化的串扰通道构建了量子误差校正和拒绝代码，而无需多党纠缠。
There is a wealth of simulation, experimental and analytical studies on propagation of orbital angular momentum (OAM) modes through atmospheric and oceanic turbulence.} Using the data of these studies and generalising the framework proposed in [Bala et al., [arXiv:2208.04555] for error-immune information transfer, we accomplish two tasks. First, we identify invariants for propagation of OAM modes through atmospheric and oceanic turbulence, in which error-immune information can be encoded. A closer look at the data reveals two universal features: (i)coherence lasts for a much longer distance in turbulence than entanglement, and, (ii) the crosstalk among different OAM modes depends very weakly on the initial OAM mode index in the weak turbulence regime. Keeping these in mind, we next develop a method for combating errors in what we call an idealised crosstalk channel. In an idealised crosstalk channel, the crossover probabilities are independent of the initial mode index (IMI). We lay down a procedure that allows to retrieve full information in a state by identifying invariant quantities. Finally, we construct quantum error correction and rejection codes for idealised crosstalk channels, without any need for multiparty entanglement.
