标题： 光纤中单光子轨道角动量量子态的四态 - 通过动态解耦进行去相位校正的限制 显示英文标题

标题： Single-photon orbital angular momentum qudit states in fiber - Limits to Dephasing correction via dynamical decoupling

摘要： 我们分析推导了光子在多模光纤中轨道角动量态的退相干模型，并表明退相干速率随$l^2$指数级增长，其中$l$是方位模式阶数。我们还通过数值计算表明，当$l$取较大值时，轨道角动量光子态会完全去相位。然而，当$l$取较小值时，可以通过动态解耦来最小化退相干，从而实现高带宽量子通信和其他类似应用的量子比特通信。\end{abstract} 显示英文摘要

摘要： We analytically derive a decoherence model for orbital angular momentum states of a photon in a multimode optical fiber and show that rate of decoherence scales exponentially with $l^2$, where $l$ is the azimuthal mode order.~We also show numerically that for large values of $l$ the orbital angular momentum photon state completely dephases.~However for lower values of $l$ the decoherence can be minimized by using dynamical decoupling to allow for qudit high-bandwidth quantum communication and similar applications. \end{abstract}