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Aria

IonQ

Aria

IonQ · trapped ions · DEPLOYED (2022) · 32 physical qubits · 25 of them made usable · access: cloud (Braket, Azure, Google Cloud)

Register profile — the machine's variant of its architecture

qubit type: hyperfine qubit
gate mechanism: laser Molmer-Sorensen via multi-channel AOM addressing
connectivity: all-to-all through the shared motional modes of one chain; gate time grows with chain length
control: room-temperature electronics + free-space AOM/AOD optical addressing
control placement: room-temp + free-space optics
readout: fluorescence on a multi-channel PMT/camera
gate evidence: a published figure (source class not yet tagged)
codes: quantum_repetition, stab_4_2_2
flags: company claim

Technologies by layer — the machine's cell per layer

1 Qubit carrier
Trapped atomic ion · primary ▣ Fig. 1 (schematic of the hardware: linear chain of 171Yb+ ions near a surface-electrode trap); Introduction ✅
~32 ¹⁷¹Yb⁺ ions in a single stationary chain, #AQ 25; deployed 2022, still on Braket/Azure/Google Cloud; no Aria-specific page among refs
2 Encoding
Hyperfine / clock-state qubit · primary ▤ §Results: Gate implementation and characterization (|0>=|F=0,mF=0>, |1>=|F=1,mF=0> hyperfine sublevels of 171Yb+) 🔎
¹⁷¹Yb⁺ ground-state hyperfine qubit; family-determined, no machine-specific encoding source
3 Gate mechanism
Mølmer–Sørensen / light-shift laser gate · primary ▣ Fig. 1 (AOMs modulate 355 nm Raman beams to drive XX gates); Fig. 2 (fidelity of native gates); §Results: Gate implementation and characterization ✅
laser Mølmer–Sørensen via multi-channel AOM addressing; 2Q fidelity ~99.6 % (#AQ 25 era)
4 Connectivity / transport
Ion-chain motional bus (all-to-all in chain) · primary ▣ Fig. 2a (all-to-all connectivity of the 11-qubit chain, 55 pairs colour-coded by XX fidelity) ✅
all-to-all through shared motional modes of one ~32-ion chain (degree 31); gate time grows with chain length
5 Control
Free-space laser addressing of ions (AOM/AOD beams) · primary ▦ Specifications (connectivity: 32 individual beams) 🔎
Aria: 25 qubits (#AQ 25), 171Yb+, 'all-to-all connectivity' with '32 individual beams, one for each qubit'; beam optics (free-space AOM/AOD) not stated — multi-channel AOM shown only for the 2019 11-qubit predecessor
6 Readout
Fluorescence state detection (ions, defects) · primary ▣ Fig. 1 (369/935 nm detection; fluorescence imaged through NA 0.6 lens onto individual PMT channels) ✅
fluorescence on a multi-channel PMT/camera; mid-circuit measurement supported on later systems
7 Code
Error-detection codes ([[4,2,2]], d=2 surface, iceberg, spacetime) · primary ▤ abstract; results ✅
fault-tolerant [[4,2,2]] Deutsch–Jozsa with post-selection on IonQ Aria-1 via Amazon Braket (sweep 7 Oct 2026, source read)
8 Decoder
— none — nothing in this layer ▦ 🔎
no decoder; no QEC run
9 Interconnect
— none — nothing in this layer ▣ Fig. 1 (single ion chain in one surface trap) ✅
single chain in one module, no interconnect
10 Manufacturing
Ion-trap fabrication (surface-electrode chips; machined 3D blade traps) · primary ▤ Introduction ('microfabricated surface electrode trap') 🔎
surface-electrode ion-trap microfabrication; family-determined, no machine-specific fab source
evidence: ✅ 6 / 10