arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2101.03120quant-phphysics.optics
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双光子多模横谱相关的快速成像

Fast imaging of multimode transverse-spectral correlations for twin photons

Michał Lipka, Michał Parniak

摘要:

超纠缠光子态-在几个自由度上表现出非经典相关性-提供了量子光通信和计算方案的改进性能。在实验上,超纠缠的横向波矢和光谱模式可以得到一个简单的方式与多模参量单光子源。然而,这种状态的实验表征仍然具有挑战性。不仅需要具有高空间分辨率的单光子检测-单光子相机-,而且还需要合适的模式转换器来观察光谱/时间自由度。我们实验证明了一个完整的4维横向波矢光谱之间的相关性的测量产生的光子对的非共线自发参量下转换(SPDC)。利用定制超快单光子相机可提供高分辨率和短测量时间。

英文摘要:

Hyperentangled photonic states - exhibiting nonclassical correlations in several degrees of freedom - offer improved performance of quantum optical communication and computation schemes. Experimentally, a hyperentanglement of transverse-wavevector and spectral modes can be obtained in a straightforward way with multimode parametric single-photon sources. Nevertheless, experimental characterization of such states remains challenging. Not only single-photon detection with high spatial resolution - a single-photon camera - is required, but also a suitable mode-converter to observe the spectral/temporal degree of freedom. We experimentally demonstrate a measurement of a full 4-dimensional transverse-wavevector-spectral correlations between pairs of photons produced in the non-collinear spontaneous parametric downconversion (SPDC). Utilization of a custom ultra-fast single-photon camera provides high resolution and a short measurement time.

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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