Universal entanglement decay of photonic orbital angular momentum qubit states in atmospheric turbulence: an analytical treatment
Universal entanglement decay of photonic orbital angular momentum qubit states in atmospheric turbulence: an analytical treatment
复制标题
DOI：
10.1088/1751-8121/ab3f3c
复制
发表时间：
2019-10-04
影响因子：
2.1
通讯作者：
Buchleitner, Andreas
中科院分区：
文献类型：
--
作者：
Bachmann, David;Shatokhin, Vyacheslav N.;Buchleitner, Andreas
研究了在弱湍流大气中具有相反方位角指数l（0）的光子轨道角动量量子比特态的纠缠演化。使用渐近方法，我们推导出解析表达式的振幅之间的模式l（0）和-l（0）的相干性引起的串扰。此外，我们解析地建立不同的，普遍的纠缠衰减定律Kolmogorov的湍流模型和两个近似。
We study the entanglement evolution of photonic orbital angular momentum qubit states with opposite azimuthal indices l(0), in a weakly turbulent atmosphere. Using asymptotic methods, we deduce analytical expressions for the amplitude of turbulence-induced crosstalk between the modes l(0) and -l(0). Furthermore, we analytically establish distinct, universal entanglement decay laws for Kolmogorov's turbulence model and for two approximations thereof.