Ultra-Compact Transverse Mode Quantum Interference Device on Silicon
Abstract Quantum photonic integrated circuits offer enhanced stability and scalability for quantum communications, sensing, and computing. Transverse modes in multimode waveguides enable high-dimensional scalability and versatile photon manipulation, but practical adoption requires compact and fabrication-tolerant quantum interference devices. Here, we present an ultra-compact taper-stepped beamsplitter that enables quantum interference between photon pairs in different transverse modes, and cascade it to realize NOON state interferometry. We experimentally achieve high visibilities of 93.9% for HOM interference and 86.5% for NOON state interference, demonstrating that efficient mode interference with active tuning can be realized on this platform.
Authors
- Xi‐Feng Ren (ORCID: https://orcid.org/0000-0001-6559-8101)
- Peipeng Xu (ORCID: https://orcid.org/0000-0003-2050-0179)
- Lixing You (ORCID: https://orcid.org/0000-0001-7304-0474)
- Guang‐Can Guo (ORCID: https://orcid.org/0000-0003-3771-9185)
- Shumin Jiang (ORCID: https://orcid.org/0000-0003-2421-5711)
- Zhen Sheng
- Fuwan Gan (ORCID: https://orcid.org/0000-0003-2870-1426)
- Junjie Du (ORCID: https://orcid.org/0000-0003-4311-1707)
- Lan‐Tian Feng
- Yingxuan Zhao (ORCID: https://orcid.org/0000-0002-8010-2845)
- Hao Li (ORCID: https://orcid.org/0000-0002-5028-2101)
- Tianzhu Zhang (ORCID: https://orcid.org/0000-0002-4439-4334)
- Yang Li (ORCID: https://orcid.org/0000-0002-9971-688X)
- Yujie Cheng
Institutions
- University of Science and Technology of China (CN)
- Chinese Academy of Sciences (CN)
- Shanghai Institute of Microsystem and Information Technology (CN)
- Beijing Academy of Quantum Information Sciences (CN)
- University of Chinese Academy of Sciences (CN)
- East China Normal University (CN)
Publication Details
- Journal
- Chinese Physics Letters
- Published
- 2025-09-25
- DOI
- https://doi.org/10.1088/0256-307x/42/11/110603
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.00