Fujitsu 1,000-qubit machine
Fujitsu 1,000-qubit machine
Register profile — the machine's variant of its architecture
qubit type: transmon
gate mechanism: not published
connectivity: 4-qubit unit cell + 3-D wiring, ~250 cells
control: 4-qubit unit cells arranged in a 3-D configuration (64/256-qubit RIKEN–Fujitsu lineage); wiring of the 1,000-qubit machine not published
control placement: room-temp
readout: dispersive
gate evidence: no published figure
flags: no published error rates, schedule risk, 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 two-level subspace; no encoding beyond the physical qubit |
| 3 Gate mechanism | Tunable-coupler CZ / iSWAP · alternate ▨ 🔎 tunable-coupler gate not confirmed; Fujitsu gate mechanism not published — undisclosed — exists, nothing published ▨ 🔎 gate mechanism not published; no specifications or fidelity targets published |
| 4 Connectivity / transport | Static nearest-neighbour lattice · primary ▨ 🔎 expected 4-qubit unit cell + 3-D wiring repeated ≈250 cells; some coverage frames target as 1,024 qubits |
| 5 Control | Vertical (out-of-plane) signal delivery — VIO, coaxmon, 3D wiring · primary ▨ release 22 Apr 2025 (3D unit-cell configuration; 1,000-qubit plan) 🔎 lineage: 256-qubit machine arranges 4-qubit unit cells in a 3-D configuration with quadrupled implementation density; 1,000-qubit computer scheduled for installation at Fujitsu Technology Park in 2026; its wiring not published Room-temperature electronics + per-qubit coax/flex · alternate ▨ 🔎 room-temperature control with perpendicular wiring (register) |
| 6 Readout | |
| 7 Code | |
| 8 Decoder | |
| 9 Interconnect | — none — nothing in this layer ◌ 🔎 monolithic, single module assumed; no interconnect details published |
| 10 Manufacturing |
evidence: ✅ 0 / 12