Jiuzhang 2.0
Jiuzhang 2.0
Register profile — the machine's variant of its architecture
qubit type: stimulated squeezed light (Gaussian boson sampling); no qubit encoding
gate mechanism: phase-programmable Gaussian boson sampling: the input squeezed states' phases are tuned; the 144-mode circuit itself is fixed
connectivity: 144-mode interferometer
control: room-temperature optics
control placement: room-temp
readout: photon click detection
gate evidence: no published figure
flags: estimated baseline
Technologies by layer — the machine's cell per layer
| 1 Qubit carrier | Squeezed light mode (CV) · primary ▤ Abstract ✅ stimulated squeezed light from a high-brightness source with near-unity purity and efficiency |
| 2 Encoding | |
| 3 Gate mechanism | Programmable linear-optical interferometer (no entangling primitive) · primary ▤ Abstract ('This GBS is programmable by tuning the phase of the input squeezed states') ✅ 144-mode photonic circuit, programmable by tuning the phase of the input squeezed states |
| 4 Connectivity / transport | — none — nothing in this layer ▤ 🔎 no switching or routing: a fixed 144-mode circuit; programmability sits in the input phases |
| 5 Control | Electro-optic drive + feed-forward electronics (room temperature) · primary ▤ 🔎 input-phase tuning of the squeezed states; room-temperature optics |
| 6 Readout | Single-photon detection (SNSPD / TES) · primary ▤ 🔎 photon detection, up to 113 detection events; detector type not in the abstract |
| 7 Code | |
| 8 Decoder | |
| 9 Interconnect | |
| 10 Manufacturing | Bulk-optics and fibre assembly (photonic samplers) · primary ◌ 🔎 bulk-optics photonic apparatus assembled in the lab |
evidence: ✅ 2 / 10