Arvak is the reference implementation of the HAL Contract. This roadmap tracks which quantum backends are integrated and tested, which are planned, and which are excluded — and why.
Nine adapters shipping as of Q1 2026. Integration covers the full HAL Contract lifecycle: submit, status, result, cancel, capabilities, availability, validate.
| Provider | Technology | Systems | Region | Adapter |
|---|---|---|---|---|
| Local Simulator | Pure Rust statevector | Up to ~25 qubits | — | arvak-adapter-sim |
| IBM Quantum | Superconducting | Eagle 127q, Heron 156q, Nighthawk 120q | US | arvak-adapter-ibm |
| IQM | Superconducting | Resonance cloud, LUMI Helmi, LRZ Garching | Finland / Germany | arvak-adapter-iqm |
| Scaleway QaaS | Superconducting (IQM) | Garnet 20q, Emerald 54q, Sirius 16q | France | arvak-adapter-iqm |
| AWS Braket | Multi-vendor | Rigetti Ankaa-3, IonQ Aria/Forte, IQM, SV1/TN1/DM1 | US / EU | arvak-adapter-braket |
| NVIDIA CUDA-Q | GPU simulation | cuStateVec, TensorNet, Density Matrix | — | arvak-adapter-cudaq |
| QDMI / MQSS | HPC standard FFI | Any QDMI v1.2.1+ device (LRZ, JSC) | Germany | arvak-adapter-qdmi |
| Quantinuum | Trapped ion (Ba) | H1 20q, H2 32q · H1/H2 emulators · 99.92% 2Q fidelity | UK | arvak-adapter-quantinuum |
| AQT | Trapped ion (Ca) | IBEX Q1 12q, offline simulator 20q | Austria | arvak-adapter-aqt |
Adapter work started; circuit submission pending provider API documentation.
| Provider | Technology | Systems | Region | Status |
|---|---|---|---|---|
| Quandela | Photonic | Altair 5q (dual-rail encoding) · EuroQCS-France | France | Adapter underway · circuit submission pending API docs |
Adapters in scope, pending API access.
| Provider | Technology | Systems | Region | Target |
|---|---|---|---|---|
| planqc | Neutral atom | 1,000q target · LRZ Garching | Germany | Q2–Q3 ’26 |
| PASQAL | Neutral atom | 250q · EuroHPC Italy | France | Q3 ’26 |
Evaluated but excluded, with reasons.
| Provider | Technology | Systems | Reason |
|---|---|---|---|
| Google Quantum AI | Superconducting | Willow 105q | No public API access |
| Xanadu | Photonic | Aurora 12q | No public API access |
| D-Wave | Quantum annealer | Advantage2 4,400+q | Non-gate-model; partnership declined |
| Origin Quantum | Superconducting | Wukong 72q | Data sovereignty & geopolitical constraints |
| IonQ (direct) | Trapped ion | Aria, Forte, Tempo | Covered via AWS Braket adapter |
| Rigetti (direct) | Superconducting | Ankaa-3 84q | Covered via AWS Braket adapter |