A Modular Cryogenic Link for Microwave Quantum Communication Over Distances of Tens of Meters
Fuente:
arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866908973905477632 |
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| author | Schär, Josua D. Storz, Simon Magnard, Paul Kurpiers, Philipp Lütolf, Janis Gehrig, Melvin Besse, Jean-Claude Kulikov, Anatoly Wallraff, Andreas |
| author_facet | Schär, Josua D. Storz, Simon Magnard, Paul Kurpiers, Philipp Lütolf, Janis Gehrig, Melvin Besse, Jean-Claude Kulikov, Anatoly Wallraff, Andreas |
| contents | Quantum technologies promise a radically new way to solve classically intractable computing problems. Superconducting circuits as a platform are at the forefront of this field. The cryogenic operation temperatures of superconducting circuits however impose challenges for the further scaling to many connected quantum information processing units into a local area or global network. In this work, we present a hardware solution for connecting quantum devices operating at microwave frequencies into local area networks, which enable the exchange of quantum information between spatially separated parties. Specifically, we demonstrate a modular system spanning distances of 5, 10 and 30 meters operated at cryogenic temperatures and connecting two superconducting circuit systems, located in individual dilution refrigerators, through a quantum communication channel. We develop a thermal model to evaluate the heat transfer processes in the setup, optimize the design and select appropriate materials for its construction. The assembled 30-meter-long system achieves operating temperatures of below 50 mK after a cooldown time of about six and a half days. This link enables the execution of distributed quantum computing and communication algorithms. It also adds the resource of non-locality, certified by a loophole-free Bell test, to the field of quantum science and technology with superconducting circuits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_15971 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A Modular Cryogenic Link for Microwave Quantum Communication Over Distances of Tens of Meters Schär, Josua D. Storz, Simon Magnard, Paul Kurpiers, Philipp Lütolf, Janis Gehrig, Melvin Besse, Jean-Claude Kulikov, Anatoly Wallraff, Andreas Quantum Physics Mesoscale and Nanoscale Physics Quantum technologies promise a radically new way to solve classically intractable computing problems. Superconducting circuits as a platform are at the forefront of this field. The cryogenic operation temperatures of superconducting circuits however impose challenges for the further scaling to many connected quantum information processing units into a local area or global network. In this work, we present a hardware solution for connecting quantum devices operating at microwave frequencies into local area networks, which enable the exchange of quantum information between spatially separated parties. Specifically, we demonstrate a modular system spanning distances of 5, 10 and 30 meters operated at cryogenic temperatures and connecting two superconducting circuit systems, located in individual dilution refrigerators, through a quantum communication channel. We develop a thermal model to evaluate the heat transfer processes in the setup, optimize the design and select appropriate materials for its construction. The assembled 30-meter-long system achieves operating temperatures of below 50 mK after a cooldown time of about six and a half days. This link enables the execution of distributed quantum computing and communication algorithms. It also adds the resource of non-locality, certified by a loophole-free Bell test, to the field of quantum science and technology with superconducting circuits. |
| title | A Modular Cryogenic Link for Microwave Quantum Communication Over Distances of Tens of Meters |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2604.15971 |