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 realized by utilizing polarization entangled state with the advantages of high robustness and enhanced spatial resolution, comparing with classical one. 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. Furthermore, OAMselective holographic scheme for quantum encryption is proposed and demonstrated. Comparing with the previous schemes, the level of security of holographic imaging encryption system can be greatly improved in our high-dimensional quantum holography.
Four-channel Imaging Based on Reconfigurable Metasurfaces: Hyperchaotic Encryption under Physical Protection
School of Information Engineering, Nanchang University（南昌大学信息工程学院）；Institute for Advanced Study, Nanchang University（南昌大学高等研究院）；Jiluan Academy, Nanchang University（南昌大学极链学院）
Holographic image reconstruction with phase recovery and autofocusing using recurrent neural networks
University of California, Los Angeles（加利福尼亚大学洛杉矶分校）；California Nano Systems Institute (CNSI)（加州纳米系统研究所）；David Geffen School of Medicine, University of California, Los Angeles（加利福尼亚大学洛杉矶分校大卫·格芬医学院）
