6,100-qubit tweezer array
6,100-qubit tweezer array
Register profile — the machine's variant of its architecture
qubit type: caesium hyperfine qubit
gate mechanism: no entangling gate, no Rydberg gate and no two-qubit operation was demonstrated on this array
connectivity: tweezer array; 33 W of laser power for 18,225 tweezers; the binding constraint above 1e4 sites is the AOD time-bandwidth product
control: SLM/AOD laser control
control placement: optics (room temperature)
readout: fluorescence imaging
gate evidence: no published figure
flags: no entangling gate
Technologies by layer — the machine's cell per layer
| 1 Qubit carrier | Alkali atom (Rb/Cs) in optical tweezers · primary ▣ Fig. 1a-b (single-shot / averaged images of single caesium atoms across an 11,998-site tweezer array) ✅ 6,100 caesium atoms in a ~12,000-site tweezer array - largest qubit array of any modality (Sep 2025) |
| 2 Encoding | Hyperfine / clock-state qubit · primary ▣ Fig. 4a-c (hyperfine clock states |0>,|1>; Ramsey T2* 14.0 ms; XY16 T2 = 12.6(1) s); Methods: Qubit state preparation, control, and readout ✅ caesium hyperfine qubit; coherence ~12.6 s |
| 3 Gate mechanism | — none — nothing in this layer ▣ Fig. 5a (proposed zone-based universal processor layout); outlook text: Rydberg 2Q gates 'should be feasible' ✅ no entangling gate, no Rydberg gate and no two-qubit operation demonstrated on this array; entanglement stated as future work |
| 4 Connectivity / transport | Atom transport by AOD tweezers (zoned architecture) · primary ▣ Fig. 1c (two-SLM tweezer generation, NA 0.65 objective, 1.5 mm FOV); Fig. 5a-b (AOD transport up to ~610 um, cylindrical lensing) ✅ tweezer array of ~12,000 sites; above 1e4 sites the binding constraint is the AOD time-bandwidth product |
| 5 Control | Laser + AOD/SLM optical control (atoms) · primary ▣ Fig. 1c (SLM/objective schematic); Fig. 4d (global RB, Clifford fidelity 0.999834(2)); Methods: Tweezer generation ✅ 33 W of laser power for 18,225 tweezers; single-qubit manipulation fidelity 99.98%; optics (room temperature) |
| 6 Readout | Fluorescence imaging of atom arrays · primary ▣ Fig. 2 (imaging histogram, photons per site, fidelity >99.99%); Fig. 3 (imaging survival 99.98952(1)%); Methods: Single-atom imaging ✅ fluorescence imaging |
| 7 Code | |
| 8 Decoder | |
| 9 Interconnect | — none — nothing in this layer ▤ Methods: Vacuum apparatus (single science glass cell; Ext. Data Fig. 1 vacuum schematic) ✅ single apparatus; monolithic, no interconnect |
| 10 Manufacturing | Optical / mechanical assembly (lasers, vacuum, objectives) · primary ▤ Methods: Vacuum apparatus; Methods: Tweezer generation (glass cell, NA 0.65 objective, two water-cooled LCoS SLMs) ✅ room-temperature optical/vacuum assembly: 33 W laser across 18,225 tweezers, single apparatus |
Standard records
T2 coherence (echo/DD) → 13 s · best (largest-array coherence)
Sep 2025 · source
evidence: ✅ 8 / 10
Pictures
Every picture carries the story of what it shows and its credit line.