IBEX Q1 (Marmot / PINE)
IBEX Q1 (Marmot / PINE)
Register profile — the machine's variant of its architecture
qubit type: optical qubit (40Ca+ S1/2–D5/2, 729 nm)
gate mechanism: laser Molmer-Sorensen; native RZ, R, RXX; up to 2,000 gates per circuit
connectivity: single chain, fully connected
control: free-space laser addressing on a rack-mounted optical bench; 2 standard 19-inch rack units, 2 m2, <2 kW, room temperature
control placement: room-temp + free-space optics
readout: fluorescence
gate evidence: a published figure (source class not yet tagged)
flags: conflicting claims
Technologies by layer — the machine's cell per layer
| 1 Qubit carrier | Trapped atomic ion · primary ▣ Fig. 1 (40Ca+ levels and transitions); Fig. 11a (fluorescence image of 11-ion string); Fig. 19 (24- and 50-ion chains); §II The qubit system ✅ trapped-ion register, 12 qubits; species ⁴⁰Ca⁺ from a secondary source; deployed via ARNICA and Scaleway, systems in Munich |
| 2 Encoding | Optical narrow-line qubit (ion S–D, atom clock) · primary ▤ §II The qubit system ✅ 40Ca+ optical qubit |4S1/2,mj=−1/2⟩–|3D5/2,mj=−1/2⟩ at 729 nm, D5/2 lifetime 1.168(7) s |
| 3 Gate mechanism | Mølmer–Sørensen / light-shift laser gate · primary ▣ Fig. 16 (parity oscillations after MS gate); Fig. 17 (MS gate performance); §IV.H Molmer-Sorensen gate and entanglement generation ✅ laser Mølmer–Sørensen, native RZ, R, RXX; 2Q fidelity 98.7±0.3 % (all pairs), 1Q 99.97±0.01 %; QV 128; max 2,000 gates/circuit |
| 4 Connectivity / transport | Ion-chain motional bus (all-to-all in chain) · primary ▣ Fig. 18 (pairwise fidelities over a 4-ion register via AOD addressing); Fig. 19 (24/50-ion chains); §IV.H ✅ single chain, 12 qubits fully connected (degree 11); nearest-neighbour crosstalk 1.0±0.4 % |
| 5 Control | Free-space laser addressing of ions (AOM/AOD beams) · primary ▣ Fig. 5 (light delivery, AOM switching, addressing); Fig. 6 (microoptics vs crossed AODs); Fig. 13 (AOD addressing unit); Fig. 9 (M-ACTION control); §III.B.2; §III.C.1 ✅ free-space laser addressing on a rack-mounted optical bench; 2 standard 19-inch rack units, 2 m², <2 kW, room temperature 22.0±1.5 °C |
| 6 Readout | Fluorescence state detection (ions, defects) · primary ▣ Fig. 11 (detection performance: 11-ion fluorescence image); Fig. 7 (trap drawer optics and detection); §III.B.3 Imaging optics; §IV.C ✅ fluorescence readout; family-determined, no readout fidelity recorded; >20,000 circuits/hour |
| 7 Code | |
| 8 Decoder | |
| 9 Interconnect | — none — nothing in this layer ▣ Fig. 2 (scale model of the demonstrator in two 19-inch racks); §III.A Mechanical assembly ✅ single module (2 rack units), no interconnect |
| 10 Manufacturing | Ion-trap fabrication (surface-electrode chips; machined 3D blade traps) · primary ▤ §III.A.1 Ion trap and vacuum apparatus (blade trap machined from gold-plated titanium) ✅ surface-electrode ion-trap microfabrication; family-determined, no machine-specific fab source Optical / mechanical assembly (lasers, vacuum, objectives) · alternate ▣ Fig. 2 (rack layout); Fig. 4 (laser light generation modules); Fig. 5 (delivery/switching); §III.B Optical subsystems ✅ rack-mounted optical bench (lasers, vacuum) in 2 standard 19-inch rack units, <2 kW; assembly process not published |
Standard records
crosstalk → 0.01 · typical (nearest neighbour)
2025 · source
code rate k/n → 5.6 circuits/s · typical (>20,000 circuits per hour)
2025 · source
evidence: ✅ 9 / 11
Pictures
Every picture carries the story of what it shows and its credit line.
