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arXiv · 2404.14690

Scalable cyclic transformation of orbital angular momentum modes based on a nonreciprocal Mach-Zehnder interferometer

Y. F. Yang·M. Y. Chen·F. P. Li·Y. P. Ruan·Z. X. Li·M. Xiao·H. Zhang·K. Y. Xia
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Abstract

The orbital angular momentum (OAM) of photons provides a pivotal resource for carrying out high-dimensional classical and quantum information processing due to its unique discrete high-dimensional nature. The cyclic transformation of a set of orthogonal OAM modes is an essential building block for universal high-dimensional information processing. Its realization in the quantum domain is the universal quantum Pauli-X gate. In this work, we experimentally demonstrate a cyclic transformation of six OAM modes with an averaged efficiency higher than 96% by exploiting a nonreciprocal Mach-Zehnder interferometer. Our system is simple and can, in principle, be scaled to more modes. By improving phase stabilization and inputting quantum photonic states, this method can perform universal single-photon quantum Pauli-X gate, thus paving the way for scalable high-dimensional quantum computation.

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Y. F. Yang, M. Y. Chen, F. P. Li, Y. P. Ruan, Z. X. Li, M. Xiao, H. Zhang, K. Y. Xia. 2024-04-23. Scalable cyclic transformation of orbital angular momentum modes based on a nonreciprocal Mach-Zehnder interferometer. https://arxiv.org/abs/2404.14690

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