Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education, Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, 100081 Beijing, China.
Phys Rev Lett. 2023 Feb 3;130(5):053602. doi: 10.1103/PhysRevLett.130.053602.
As an important imaging technique, holography has been realized with different physical dimensions of light, including polarization, wavelength, and time. Recently, quantum holography has been demonstrated by utilizing polarization entangled state with the advantages of high robustness and enhanced spatial resolution, comparing with classical holography. However, the polarization is only a two-dimensional degree of freedom, which greatly limits the capacity of quantum holography. Here, we propose a method to realize high-dimensional quantum holography by using high-dimensional orbital angular momentum (OAM) entanglement. A high-capacity OAM-encoded quantum holographic system can be obtained by multiplexing a wide range of OAM-dependent holographic images. Proof-of-principle experiments with four- and six-dimensional OAM entangled states have been implemented and verify the feasibility of our idea. Our experimental results also demonstrate that the high-dimensional quantum holography shows a high robustness to classical noise. What is more, the level of security of the holographic imaging encryption system can be greatly improved in our high-dimensional quantum holography.
作为一种重要的成像技术，全息术已经在不同的光物理维度上实现，包括偏振、波长和时间。最近，通过利用偏振纠缠态，量子全息术已经得到了证明，与经典全息术相比，它具有高稳健性和增强的空间分辨率的优势。然而，偏振仅仅是一个二维自由度，这极大地限制了量子全息术的容量。在这里，我们提出了一种通过使用高维轨道角动量（OAM）纠缠来实现高维量子全息术的方法。通过复用大范围的 OAM 相关全息图像，可以获得大容量的 OAM 编码量子全息系统。我们已经实现了四维和六维 OAM 纠缠态的原理验证实验，验证了我们想法的可行性。我们的实验结果还表明，高维量子全息术对经典噪声具有很高的稳健性。更重要的是，我们的高维量子全息术可以大大提高全息成像加密系统的安全性。
