Sqale
Sqale
Register profile — the machine's variant of its architecture
qubit type: caesium hyperfine qubit
gate mechanism: Rydberg-blockade CZ
connectivity: individual qubit addressing united with dynamically reconfigurable arrays - deliberately less transport than the Harvard/QuEra zoned design
control: SLM/AOD laser control
control placement: optics (room temperature)
readout: fluorescence imaging
gate evidence: a benchmark paper with its protocol
decoder mode: offline — syndromes decoded after the run
codes: stab_16_4_4, stab_4_2_2
flags: conflicting qubit counts
Technologies by layer — the machine's cell per layer
| 1 Qubit carrier | Alkali atom (Rb/Cs) in optical tweezers · primary ▣ Fig. 1b (image of Cs atoms, hexagonal lattice); Methods: Qubit array generation ✅ caesium hyperfine qubits; 100 physical qubits at the NQCC (Dec 2025) |
| 2 Encoding | Hyperfine / clock-state qubit · primary ▤ Methods: State preparation and measurement ✅ caesium ground-state hyperfine qubit |
| 3 Gate mechanism | Rydberg-blockade CZ · primary ▣ Fig. 1b (CZ fidelities per connection); Fig. 6 (CZ fidelities) ✅ Rydberg-blockade CZ; 2Q gate fidelity 99.73% (Dec 2025) |
| 4 Connectivity / transport | Atom transport by AOD tweezers (zoned architecture) · primary ▣ Fig. 1a–b (6 qubits in hexagonal lattice, 6 µm); Methods: Qubit array generation ✅ individual qubit addressing with dynamically reconfigurable arrays; all-to-all connectivity while minimising atom motion |
| 5 Control | Laser + AOD/SLM optical control (atoms) · primary ▤ Methods: Qubit array generation (AODs driven by OPX+ multi-tone RF) 🔎 SLM/AOD laser control; optics (room temperature) |
| 6 Readout | Fluorescence imaging of atom arrays · primary ▤ Methods: State preparation and measurement (NDSSR) ✅ fluorescence imaging |
| 7 Code | High-rate concatenated codes with transversal gates · primary ▣ Fig. 1 ([[4,2,2]] logical qubits); §Discussion (concatenation) 🔎 stab_16_4_4 level-2 C4 many-hypercube (concatenated [[4,2,2]]) on 114 atoms; logical Shor variant factored 15; logical state 8x better than physical |
| 8 Decoder | Neural decoders (AlphaQubit 2, CNN, transformers) · primary ▨ ✅ AI-accelerated decoding with NVIDIA (announced, no numbers); offline GPU decoding via NVQLink · alternate ▨ ✅ GPU-accelerated decoding with NVIDIA (announced, no numbers); offline |
| 9 Interconnect | |
| 10 Manufacturing | Optical / mechanical assembly (lasers, vacuum, objectives) · primary ◌ 🔎 room-temperature optical/vacuum assembly: SLM/AOD lasers around a single vacuum cell |
Standard records
2Q error under full-width parallel operation → 2.70e-3 · best on a deployed atom system
Dec 2025 · source
evidence: ✅ 7 / 11
Pictures
Every picture carries the story of what it shows and its credit line.