Pors Bart-Jan, Monken C H, Eliel Eric R, Woerdman J P
Huygens Laboratory, Leiden University, Leiden, The Netherlands.
Opt Express. 2011 Mar 28;19(7):6671-83. doi: 10.1364/OE.19.006671.
We demonstrate experimentally how orbital-angular-momentum entanglement of two photons evolves under the influence of atmospheric turbulence. Experimental results are in excellent agreement with our theoretical model, which combines the formalism of two-photon coincidence detection with a Kolmogorov description of atmospheric turbulence. We express the robustness to turbulence in terms of the dimensionality of the measured correlations. This dimensionality is surprisingly robust: scaling up our system to real-life dimensions, a horizontal propagation distance of 2 km seems viable.
我们通过实验证明了两个光子的轨道角动量纠缠在大气湍流影响下是如何演化的。实验结果与我们的理论模型高度吻合，该理论模型将双光子符合探测形式与大气湍流的科尔莫戈罗夫描述相结合。我们用测量相关性的维度来表示对湍流的鲁棒性。这个维度出奇地稳健：将我们的系统扩大到实际尺寸，2公里的水平传播距离似乎是可行的。
