Storage and retrieval of vector beams of light in a multiple-degree-of-freedom quantum memory.
Storage and retrieval of vector beams of light in a multiple-degree-of-freedom quantum memory.
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DOI：
10.1038/ncomms8706
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发表时间：
2015-07-13
影响因子：
16.6
通讯作者：
Laurat J
中科院分区：
文献类型：
--
作者：
Parigi V;D'Ambrosio V;Arnold C;Marrucci L;Sciarrino F;Laurat J
光在横向平面中的完整结构化，包括强度、相位和偏振，为经典光学以及量子光学和信息科学的应用提供了前所未有的能力。利用特殊的拓扑结构可以增强聚焦、数据多路复用或先进的传感和计量。在这里，我们实验证明了这种空间偏振图案的光束到光学存储器的存储。在单光子水平上，通过在光轴分布上具有拓扑电荷的液晶盒产生一组矢量涡旋模，并证明了恢复后的相位和偏振奇异性的保持。实现的多自由度存储器可以在经典数据处理中找到应用，但也可以在量子网络场景中找到应用，其中结构化状态已被证明可以提供有希望的属性，例如旋转不变性。 利用光场的完全结构化来存储多个自由度对于经典光学和量子光学的应用具有很大的希望。在这里，作者演示了空间偏振图案光束存储到光学存储器中，并在单光子水平上检索。
The full structuration of light in the transverse plane, including intensity, phase and polarization, holds the promise of unprecedented capabilities for applications in classical optics as well as in quantum optics and information sciences. Harnessing special topologies can lead to enhanced focusing, data multiplexing or advanced sensing and metrology. Here we experimentally demonstrate the storage of such spatio-polarization-patterned beams into an optical memory. A set of vectorial vortex modes is generated via liquid crystal cell with topological charge in the optic axis distribution, and preservation of the phase and polarization singularities is demonstrated after retrieval, at the single-photon level. The realized multiple-degree-of-freedom memory can find applications in classical data processing but also in quantum network scenarios where structured states have been shown to provide promising attributes, such as rotational invariance. Exploiting the full structuration of light fields for storing multiple degrees of freedom holds great promise for applications in classical and quantum optics. Here, the authors demonstrate the storage of spatio-polarization-patterned beams into an optical memory, and its retrieval at the single-photon level.