Juq-703-uc |work|
"JUQ-703-UC"
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Qubit type
| Parameter | Specification | |-----------|----------------| | | 3‑D transmon superconducting qubits with epitaxial Al‑on‑Si substrate | | Physical qubits | 128 × 128 × 8 array (≈ 131 k qubits) | | Logical qubits (surface‑code) | > 10 k (code distance d = 31) | | Gate fidelity | 99.999 % (single‑qubit), 99.995 % (two‑qubit) | | Coherence time (T₁/T₂) | 250 µs / 300 µs | | Control electronics | Integrated cryogenic CMOS (CMOS‑Q) on‑chip | | Cooling solution | Closed‑cycle Gifford‑McMahon + miniature dilution stage (10 mK) | | Package dimensions | 85 mm × 85 mm × 45 mm (2 U rack) | | Power consumption | 2.5 kW (including cooling) | | Interface | PCIe 5.0 x16, 200 Gb/s quantum‑link, OpenQASM‑3 compatibility | JUQ-703-UC
2.2 Cryogenic CMOS Control (CMOS‑Q)
- Reduced footprint – up to 70 % less planar area per qubit.
- Improved isolation – the 3‑D cavity geometry suppresses crosstalk and dielectric loss.
- Scalable interconnects – through‑silicon vias (TSVs) route microwave control lines directly to each layer.
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