Multimode quantum interference of photons in multiport integrated devices
Open accessAbstract
Photonics is a leading approach in realizing future quantum technologies and recently, optical waveguide circuits on silicon chips have demonstrated high levels of miniaturization and performance. Multimode interference (MMI) devices promise a straightforward implementation of compact and robust multiport circuits. Here, we show quantum interference in a 2×2 MMI coupler with visibility of V=95.6±0.9%. We further demonstrate the operation of a 4×4 port MMI device with photon pairs, which exhibits complex quantum interference behaviour. We have developed a new technique to fully characterize such multiport devices, which removes the need for phase-sensitive measurements and may find applications for a wide range of photonic devices. Our results show that MMI devices can operate in the quantum regime with high fidelity and promise substantial simplification and concatenation of photonic quantum circuits. Multimode interference devices could allow the implementation of multiport circuits for quantum technologies. Here, quantum interference is demonstrated in 2×2 and 4×4 multimode interference devices, and a technique is reported to characterize such devices.
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In LO experimental implementations, discrimination among CHMs can be accomplished via the observation of characteristic patterns of photonic quantum interference.
“In LO experimental implementations, discrimination among CHMs can be accomplished via the observation of characteristic patterns of photonic quantum interference [59-62].”
From Universal linear optics (2015) · cites this paper as [62]
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- Authors
- Peruzzo, A., Laing, A., Politi, A., Rudolph, T., & O'Brien, J. L.
- Affiliations
- University of Bristol (GB)
- London Institute for Mathematical Sciences (GB)
- Venue
- Nature Communications
- Published
- 2011-03-01
- Volume
- 2
- Issue
- 1
- Pages
- 224-224
- ISSN
- 2041-1723 (ISSN-L)
- PMC
- PMC3072100
- OpenAlex
- W2058385438
- Cited by
- 212
- References
- 35
- Citations by year
- 2026: 5 · 2025: 19 · 2024: 18 · 2023: 8 · 2022: 6 · 2021: 14 · 2020: 9 · 2019: 12 · 2018: 12 · 2017: 19 · 2016: 13 · 2015: 16 · 2014: 16 · 2013: 15 · 2012: 19
- FWCI
- 13.64
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Nature Communications (publishedVersion, cc-by-nc-nd)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- ePrints Soton (University of Southampton) (acceptedVersion)
- arXiv (Cornell University) (submittedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- RMIT Research Repository (RMIT University Library) (submittedVersion)
- Figshare (submittedVersion)
- Bristol Research (University of Bristol) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Leverhulme Trust
- Intelligence Advanced Research Projects Activity
- Engineering and Physical Sciences Research Council (EP/F010524/1, EP/G016828/1)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic and Optical Devices
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
- Keywords
- multimode interference, quantum interference, silicon photonics, optical waveguide couplers, photon pairs, fringe visibility, device characterization, quantum photonic circuits, quantum photonics
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