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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.09879 |
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| _version_ | 1866911503647506432 |
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| author | Jordan, Caleb Bernhardt, Jacob Rahamim, Joseph Kirichenko, Alex Bharadwaj, Karthik Fry-Bouriaux, Louis Somoroff, Aaron Porsch, Katie Tsai, Kan-Ting Walter, Jason Weis, Adam Yu, Meng-Ju Renzullo, Mario Javelle, Jerome Checkley, Chris Mukhanov, Oleg Yohannes, Daniel Vernik, Igor Han, Shu-Jen |
| author_facet | Jordan, Caleb Bernhardt, Jacob Rahamim, Joseph Kirichenko, Alex Bharadwaj, Karthik Fry-Bouriaux, Louis Somoroff, Aaron Porsch, Katie Tsai, Kan-Ting Walter, Jason Weis, Adam Yu, Meng-Ju Renzullo, Mario Javelle, Jerome Checkley, Chris Mukhanov, Oleg Yohannes, Daniel Vernik, Igor Han, Shu-Jen |
| contents | Current superconducting quantum computing platforms face significant scaling challenges, as individual signal lines are required for control of each qubit. This wiring overhead is a result of the low level of integration between control electronics at room temperature and qubits operating at millikelvin temperatures, which raise serious doubts among technologists about whether utility-scale quantum computers can be built. A promising alternative is to utilize cryogenic, superconducting digital control electronics that coexist with qubits. Here, we report the first multi-qubit system integrating this technology. The system utilizes digital demultiplexing, breaking the linear scaling of control lines to number of qubits. We also demonstrate single-qubit fidelities above 99%, and up to 99.9%. This work is a critical step forward in realizing highly scalable chip-based quantum computers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_09879 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum Computer Controlled by Superconducting Digital Electronics at Millikelvin Temperature Jordan, Caleb Bernhardt, Jacob Rahamim, Joseph Kirichenko, Alex Bharadwaj, Karthik Fry-Bouriaux, Louis Somoroff, Aaron Porsch, Katie Tsai, Kan-Ting Walter, Jason Weis, Adam Yu, Meng-Ju Renzullo, Mario Javelle, Jerome Checkley, Chris Mukhanov, Oleg Yohannes, Daniel Vernik, Igor Han, Shu-Jen Quantum Physics Current superconducting quantum computing platforms face significant scaling challenges, as individual signal lines are required for control of each qubit. This wiring overhead is a result of the low level of integration between control electronics at room temperature and qubits operating at millikelvin temperatures, which raise serious doubts among technologists about whether utility-scale quantum computers can be built. A promising alternative is to utilize cryogenic, superconducting digital control electronics that coexist with qubits. Here, we report the first multi-qubit system integrating this technology. The system utilizes digital demultiplexing, breaking the linear scaling of control lines to number of qubits. We also demonstrate single-qubit fidelities above 99%, and up to 99.9%. This work is a critical step forward in realizing highly scalable chip-based quantum computers. |
| title | Quantum Computer Controlled by Superconducting Digital Electronics at Millikelvin Temperature |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2503.09879 |