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标题: "High-dimensional Supermode Photonics Enabled by Hierarchical Supersymmetric Transformation"
原文链接: "https://arxiv.org/abs/2608.11099"
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## Physics > Optics

## Title:High-dimensional Supermode Photonics Enabled by Hierarchical Supersymmetric Transformation

Authors:[Yuan Zhong](https://arxiv.org/search/physics?searchtype=author&query=Zhong,+Y), [Kaile Chen](https://arxiv.org/search/physics?searchtype=author&query=Chen,+K), [Qi Lu](https://arxiv.org/search/physics?searchtype=author&query=Lu,+Q), [Chunxue Wang](https://arxiv.org/search/physics?searchtype=author&query=Wang,+C), [Jingchi Li](https://arxiv.org/search/physics?searchtype=author&query=Li,+J), [Yuru Li](https://arxiv.org/search/physics?searchtype=author&query=Li,+Y), [Zhaohui Li](https://arxiv.org/search/physics?searchtype=author&query=Li,+Z), [Chao Lu](https://arxiv.org/search/physics?searchtype=author&query=Lu,+C), [Xinchen Ji](https://arxiv.org/search/physics?searchtype=author&query=Ji,+X), [Yikai Su](https://arxiv.org/search/physics?searchtype=author&query=Su,+Y), [Lu Sun](https://arxiv.org/search/physics?searchtype=author&query=Sun,+L)

[View PDF](https://arxiv.org/pdf/2608.11099)

> Abstract:Modes provide a fundamental degree of freedom for photonic information processing, yet conventional multimode waveguides exhibit non-equidistant effective-index distributions, making closely spaced modes vulnerable to intermodal crosstalk. Supermode photonics can overcome this limitation by geometrically engineering coupled waveguide arrays to realize large and equidistant effective-index spacing, but precise supermode excitation and detection remain challenging at the subwavelength scale. Here, we report a hierarchical second-order discrete supersymmetric (DSUSY) transformation method that enables high-purity excitation and extraction of arbitrary target supermodes in a compact and scalable architecture. We experimentally demonstrate six-supermode multiplexing systems on silicon-on-insulator and silicon nitride platforms. Benefiting from the large supermode index spacing and the isospectrality of DSUSY transformations, the fabricated devices exhibit low insertion losses (<2.6 dB) and intermodal crosstalk (<-11.1 dB) for all channels over a 100-nm wavelength range. A high-speed transmission experiment on the silicon device achieves an aggregate data rate of 1.2 Tbit/s, with all channel bit error rates below the 7% hard-decision forward-error-correction threshold. The method can further support polarization-insensitive architectures, enabling compact polarization-supermode hybrid [this http URL](http://multiplexing.this/) work provides a scalable route toward high-dimensional supermode photonics for high-capacity optical interconnects, highly parallel AI optical computing, and high-dimensional quantum information processing.

| Comments: |  |
| --- | --- |
| Subjects: | Optics (physics.optics) |
| Cite as: | [arXiv:2608.11099](https://arxiv.org/abs/2608.11099) \[physics.optics\] |
|  | (or [arXiv:2608.11099v1](https://arxiv.org/abs/2608.11099v1) \[physics.optics\] for this version) |
|  | [https://doi.org/10.48550/arXiv.2608.11099](https://doi.org/10.48550/arXiv.2608.11099) |

## Submission history

From: Yuan Zhong \[[view email](https://arxiv.org/show-email/4a230cdf/2608.11099)\]  
**\[v1\]** Tue, 11 Aug 2026 16:01:50 UTC (11,860 KB)

[Which authors of this paper are endorsers?](https://arxiv.org/auth/show-endorsers/2608.11099) | Disable MathJax ([What is MathJax?](https://info.arxiv.org/help/mathjax.html))
