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arXiv 2304.14280quant-ph
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纠缠结构光子的完整空间表征

Full spatial characterization of entangled structured photons

Xiaoqin Gao, Yingwen Zhang, Alessio D'Errico, Alicia Sit, Khabat Heshami, Ebrahim Karimi

备注：
20 pages, 16 figures
发表信息：
Phys. Rev. Lett. 132, 063802 (2024)
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AI总结：

本文利用时间标记事件相机，仅通过16次测量即完成双粒子纠缠矢量光束约260万个模式的同步表征，实现了结构光高维纠缠表征的重要突破。

摘要：

矢量光束（VBs）是具有空间变化偏振分布的全偏振光束，已在显微术、计量学、光镊、纳米光子学和通信等众多应用中得到广泛使用。此类光束的纠缠引起了人们的极大兴趣，并已被证明在扩展现有应用和催生新应用方面具有巨大潜力。然而，由于纠缠矢量光束（EVBs）具有复杂的空间变化偏振结构，对这些光束进行完整的纠缠表征仍然具有挑战性且耗时。在此，我们使用了一台时间标记事件相机，证明了仅通过16次测量即可同时表征双粒子纠缠矢量光束之间约$2.6\ imes10^6$个模式的能力。这一成就是结构光高维纠缠表征中的一个重要里程碑，并可能对相关量子技术的实现产生重大影响。该技术的潜在应用十分广泛，可为量子通信、量子成像以及结构化纠缠光子发挥关键作用的其他领域的发展铺平道路。

英文摘要：

Vector beams (VBs) are fully polarized beams with spatially varying polarization distributions, and they have found widespread use in numerous applications such as microscopy, metrology, optical trapping, nano-photonics, and communications. The entanglement of such beams has attracted significant interest, and it has been shown to have tremendous potential in expanding existing applications and enabling new ones. However, due to the complex spatially varying polarization structure of entangled VBs (EVBs), a complete entanglement characterization of these beams remains challenging and time-consuming. Here, we have used a time-tagging event camera to demonstrate the ability to simultaneously characterize approximately $2.6\times10^6$ modes between a bi-partite EVB using only 16 measurements. This achievement is an important milestone in high-dimensional entanglement characterization of structured light, and it could significantly impact the implementation of related quantum technologies. The potential applications of this technique are extensive, and it could pave the way for advancements in quantum communication, quantum imaging, and other areas where structured entangled photons play a crucial role.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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