High-dimensional entanglement-enabled holography for quantum encryption

TL;DR

This paper introduces a high-dimensional quantum holography technique using orbital angular momentum entanglement, significantly increasing capacity and security over traditional polarization-based methods, with successful proof-of-principle experiments.

Contribution

It presents a novel high-dimensional quantum holography method utilizing OAM entanglement, enhancing capacity and security in quantum imaging and encryption.

Findings

Demonstrated four- and six-dimensional OAM entangled states for holography.

Showed high robustness of high-dimensional holography against classical noise.

Proposed and validated an OAM-selective holographic encryption scheme.

Abstract

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.