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arXiv · 2304.12813

Preparation of multiphoton high-dimensional GHZ state

Wen-Bo Xing·Xiao-Min Hu·Yu Guo·Bi-Heng Liu·Chuan-Feng Li·Guang-Can Guo
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Abstract

Multipartite high-dimensional entanglement presents different physics from multipartite two-dimensional entanglement. However, how to prepare multipartite high-dimensional entanglement is still a challenge with linear optics. In this paper, a multiphoton GHZ state with arbitrary dimensions preparation protocol is proposed in optical systems. In this protocol, we use auxiliary entanglements to realize a high-dimensional entanglement gate, so that high-dimensional entangled pairs can be connected into a multipartite high-dimensional GHZ state. Specifically, we give an example of using photons' path degree of freedom to prepare a 4-particle 3-dimensional GHZ state. Our method can be extended to other degrees of freedom and can generate arbitrary GHZ entanglement in any dimension.

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Wen-Bo Xing, Xiao-Min Hu, Yu Guo, Bi-Heng Liu, Chuan-Feng Li, Guang-Can Guo. 2023-04-25. Preparation of multiphoton high-dimensional GHZ state. https://doi.org/10.1364/oe.494850

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