Baihua (Quafu platform)
Beijing Academy of Quantum Information Sciences
Baihua (Quafu platform)
Register profile — the machine's variant of its architecture
qubit type: transmon
gate mechanism: tunable coupler
connectivity: 2-D lattice
control: room-temperature RF
control placement: room-temp
readout: dispersive
gate evidence: a published figure (source class not yet tagged)
flags: no published error rates, source not confirmed
Technologies by layer — the machine's cell per layer
| 1 Qubit carrier | |
| 2 Encoding | Bare physical qubit (no encoding) · primary ◌ 🔎 bare transmon |0⟩/|1⟩ subspace; family-determined, no machine-specific source |
| 3 Gate mechanism | Tunable-coupler CZ / iSWAP · primary ▣ Fig. 1e (130 calibrated CZ gates); Fig. 1f (IRB of CZ Q144–Q145); main text (tunable couplers) ✅ tunable coupler (register); no 1Q/2Q fidelity data published |
| 4 Connectivity / transport | Static nearest-neighbour lattice · primary ▣ Fig. 1c (schematic of the processor lattice) ✅ 2-D lattice (register); no topology detail in note |
| 5 Control | Room-temperature electronics + per-qubit coax/flex · primary ▣ Fig. 1b (high-density wiring for the QCP); Fig. 1a (dilution refrigerator) ✅ room-temperature RF control (register); no control-stack detail published |
| 6 Readout | Dispersive microwave readout (+TWPA, Purcell) · primary ▤ main text (individual readout resonator per qubit; each 13-qubit row on a common feedline) ✅ dispersive readout (family-determined); no readout fidelity data |
| 7 Code | |
| 8 Decoder | |
| 9 Interconnect | |
| 10 Manufacturing | Superconducting-qubit lithography (Al/AlOx/Al junctions, Nb wiring, 300 mm) · primary ◌ 🔎 superconducting-qubit lithography; family-determined, no machine-specific fab source |
evidence: ✅ 5 / 10