Topological networks for quantum communication between distant qubits
Open accessAbstract
Efficient communication between qubits relies on robust networks, which allow for fast and coherent transfer of quantum information. It seems natural to harvest the remarkable properties of systems characterized by topological invariants to perform this task. Here, we show that a linear network of coupled bosonic degrees of freedom, characterized by topological bands, can be employed for the efficient exchange of quantum information over large distances. Important features of our setup are that it is robust against quenched disorder, all relevant operations can be performed by global variations of parameters, and the time required for communication between distant qubits approaches linear scaling with their distance. We demonstrate that our concept can be extended to an ensemble of qubits embedded in a two-dimensional network to allow for communication between all of them.
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When appropriately stacked into three dimensions, the corner modes give rise to chiral one-dimensional modes along edges of the three-dimensional sample.
“When appropriately stacked into three dimensions, the corner modes give rise to chiral one dimensional modes along edges of the three dimensional sample.”
From Observation of a phononic quadrupole topological insulator (2018) · cites this paper as [25]
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Observation of a phononic quadrupole topological insulator
Serra-Garcia, M., Peri, V., Süsstrunk, R., Bilal, O. R., Larsen, T., Villanueva, L. G., & Huber, S. D. (2018) · Nature · doi:10.1038/nature25156 · Cited by 982 · see citing works
- Authors
- Lang, N., & Büchler, H. P.
- Affiliations
- University of Stuttgart (DE)
- Corresponding author
- Lang, Nicolai
- Venue
- npj Quantum Information
- Published
- 2017-11-07
- Volume
- 3
- Issue
- 1
- ISSN
- 2056-6387 (ISSN-L)
- OpenAlex
- W2618467439
- Cited by
- 78
- References
- 63
- Citations by year
- 2026: 8 · 2025: 15 · 2024: 9 · 2023: 14 · 2022: 8 · 2021: 10 · 2020: 5 · 2019: 3 · 2018: 6
- FWCI
- 2.29
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- npj Quantum Information (publishedVersion, cc-by)
- arXiv (Cornell University) (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation (PHY11- 25915, NSF PHY-11-25915, 1125915)
- European Commission (HORIZON2020)
- H2020 European Research Council (681208)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum many-body systems
- Keywords
- topological networks, quantum communication, topological bands, quenched disorder, topological invariants
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