Multidimensional Light Detection with Symmetry-engineered Heterojunctions

Abstract

Miniaturised multidimensional light detection, encompassing full-Stokes polarimetry and spectroscopy in ultracompact footprints, is attracting growing interest for its potential to capture a comprehensive set of light properties in portable platforms. Although significant progress has been made in miniaturised schemes for independent polarisation and spectral detection, achieving simultaneous high-dimensional light detection remains an outstanding challenge that limits their development toward full integration. We overcome this limitation by breaking the rotational and inversion symmetries in a symmetry-engineered van der Waals heterojunction to realise an ultracompact multidimensional photodetector. The dual symmetry breaking gives rise to non-trivial quantum geometric and topological features, enabling simultaneous broadband polarisation- and spectrum-resolved light detection, in contrast to previous van der Waals material-based devices, which could detect only one of these modalities. Our device, with an effective area of only 10 micron x 10 micron, reconstructs full-Stokes polarisation with overall root-mean-square errors below 0.05 and resolves spectral peaks separated by 0.4 nm, capabilities not previously achieved in single-pixel detectors. By unifying high-fidelity polarimetry and sub-nanometre spectroscopy in a single electrically tunable junction, our work eliminates the need for cascaded detection architectures and establishes a foundation for multidimensional detector arrays for integrated photonics, quantum information processing, and precision imaging.

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Cite

BibTeX RIS

BibTeX

@misc{lin2026multidimensional,
  title = {{Multidimensional Light Detection with Symmetry-engineered Heterojunctions}},
  author = {Yucai Lin and Yaoqiang Zhou and Ruijuan Tian and Faisal Ahmed and Andreas C. Liapis and Youqiang Huang and Yawei Dai and Yuwei Chen and Weiwei Cai and Zongyin Yang and Weida Hu and Tawfique Hasan and Luojun Du and Zhipei Sun},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.02161},
  eprint = {2609.02161},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.02161},
  note = {CC BY-NC-ND 4.0},
}

RIS

TY  - UNPB
TI  - Multidimensional Light Detection with Symmetry-engineered Heterojunctions
AU  - Yucai Lin
AU  - Yaoqiang Zhou
AU  - Ruijuan Tian
AU  - Faisal Ahmed
AU  - Andreas C. Liapis
AU  - Youqiang Huang
AU  - Yawei Dai
AU  - Yuwei Chen
AU  - Weiwei Cai
AU  - Zongyin Yang
AU  - Weida Hu
AU  - Tawfique Hasan
AU  - Luojun Du
AU  - Zhipei Sun
PY  - 2026
DA  - 2026/09/02
PB  - arXiv
DO  - 10.48550/arxiv.2609.02161
UR  - https://arxiv.org/abs/2609.02161
AB  - Miniaturised multidimensional light detection, encompassing full-Stokes polarimetry and spectroscopy in ultracompact footprints, is attracting growing interest for its potential to capture a comprehensive set of light properties in portable platforms. Although significant progress has been made in miniaturised schemes for independent polarisation and spectral detection, achieving simultaneous high-dimensional light detection remains an outstanding challenge that limits their development toward full integration. We overcome this limitation by breaking the rotational and inversion symmetries in a symmetry-engineered van der Waals heterojunction to realise an ultracompact multidimensional photodetector. The dual symmetry breaking gives rise to non-trivial quantum geometric and topological features, enabling simultaneous broadband polarisation- and spectrum-resolved light detection, in contrast to previous van der Waals material-based devices, which could detect only one of these modalities. Our device, with an effective area of only 10 micron x 10 micron, reconstructs full-Stokes polarisation with overall root-mean-square errors below 0.05 and resolves spectral peaks separated by 0.4 nm, capabilities not previously achieved in single-pixel detectors. By unifying high-fidelity polarimetry and sub-nanometre spectroscopy in a single electrically tunable junction, our work eliminates the need for cascaded detection architectures and establishes a foundation for multidimensional detector arrays for integrated photonics, quantum information processing, and precision imaging.
ER  -

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