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arXiv 0901.2783quant-ph
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轨道Angular Momentum态的连续变量纠缠和压缩

Continuous Variable Entanglement and Squeezing of Orbital Angular Momentum States

Mikael Lassen, Gerd Leuchs, Ulrik L. Andersen

摘要:

我们首次报道了一阶连续变量轨道角动量态的实验表征。利用空间非简并光学参量振荡器(OPO),我们在两个一阶拉盖尔-高斯模之间产生了正交纠缠。将OAM模族映射到轨道Poincare球上,三个轨道参数跨越了球面上的模式位置。利用非简并的OPO,我们产生了这些参数的压缩,并作为一个例子,我们重建的“雪茄形”的轨道庞加莱球上的不确定性体积。

英文摘要:

We report the first experimental characterization of the first-order continuous variable orbital angular momentum states. Using a spatially non-degenerate optical parametric oscillator (OPO) we produce quadrature entanglement between the two first-order Laguerre-Gauss modes. The family of OAM modes is mapped on an orbital Poincare sphere, and the modes position on the sphere is spanned by the three orbital parameters. Using the non-degenerate OPO we produce squeezing of these parameters, and as an illustration, we reconstruct the "cigar-shaped" uncertainty volume on the orbital Poincare sphere.

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