Qubit ZooMillikelvin classical-control hardware for superconducting qubits — an on-chip superconducting controller for high-fidelity all-digital qubit manipulation. Zoo entry: classical-control.
Abstract
The development of large-scale superconducting quantum computing requires efficient in-situ control methods that allow high-fidelity operations at millikelvin temperatures. Superconducting circuits based on Josephson junctions offer a promising solution due to their high speed, low power dissipation, and cryogenic nature. Here, we report a superconducting quantum controller that enables direct chip-to-chip interconnection with qubits at 10 mK and high-fidelity, all-digital manipulation. Randomized benchmarking reveals a uniformly high average Clifford fidelity of 99.9% with leakage to high energy levels on the order of , and an estimated average gate operation energy of 0.121 fJ, demonstrating the potential to resolve the control bottleneck in superconducting quantum computing.
Key Findings
- Demonstrates a superconducting quantum controller operating at 10 mK with direct chip-to-chip interconnection to qubits.
- Reports average Clifford fidelity of 99.9% with leakage on the order of .
- Estimates average gate-operation energy at 0.121 fJ, targeting the superconducting control bottleneck.
Links
- arXiv: 2604.05693
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