Catalog — QPU record · IQM · Superconducting
IQM Garnet
IQM Garnet is a superconducting gate-based processor by IQM with a disclosed qubit count detailed below (2024). Below: every publicly disclosed figure with its source, method, and vendor-claim status — plus what is not disclosed, recorded as findings.
Measurement records7 disclosed · 2 not disclosed · 4 sources
Select a figure to open its record
Qubit count (qubit_count_physical)20 computational qubits (+30 tunable coupler qubits, 50 total on chip) qubitsvendor claim
Vendor claim
- Method
- VENDOR_UNSPECIFIED
- Notes
- IQM press release (2024-05-23) confirms 20-qubit QPU.
- Citation key
[iqm/iqm-garnet:qubit-count-physical:2026-08-19]
Two-qubit gate quality (two_qubit_gate_fidelity)median 99.51% (CZ) across 30 qubit pairs; best single pair up to 99.8% %vendor claim
Vendor claim
- Source
- IQM Quantum Computers expands access to IQM Garnet through Amazon Web Services · published 2024-05-23
- Method
- not stated on the press release page (benchmarking method not named); current calibration data is on the Braket console device page (login required)
- Aggregation
- median across 30 qubit pairs; maximum for best pair also stated
- Notes
- IQM Resonance product page separately quotes 'Two-qubit gate operation fidelity of 99.8%' for its Crystal 20 QPU with no aggregation qualifier — this matches the best-pair figure, not the median. AWS Braket IQM page independently lists 'median 2-qubit gate fidelity of 99.51%'.
- Citation key
[iqm/iqm-garnet:two-qubit-gate-fidelity:2026-08-19]
Single-qubit gate quality (one_qubit_gate_fidelity)99.92% %vendor claim
Vendor claim
- Method
- not stated on the page
- Aggregation
- median
- Citation key
[iqm/iqm-garnet:one-qubit-gate-fidelity:2026-08-19]
Gate duration (two_qubit_gate_duration)20–40 nsvendor claim
Vendor claim
- Method
- VENDOR_UNSPECIFIED
- Aggregation
- range
- Citation key
[iqm/iqm-garnet:two-qubit-gate-duration:2026-08-19]
Readout (readout_fidelity)not publicly disclosed
Not publicly disclosed — checked 2026-08-19
- Finding
- No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
- Sources queried
- AWS Braket IQM device page; IQM Garnet press release (2024-05-23); iqmacademy.com/qpu/garnet/ (page is JS-rendered, no data retrievable via fetch)
- Notes
- AWS states up-to-date characterization data lives on the Braket console device details page (behind AWS login).
Coherence (coherence_times_T1_T2)not publicly disclosed
Not publicly disclosed — checked 2026-08-19
- Finding
- No public disclosure found. This is a recorded, dated finding — we do not substitute an estimate or borrow a figure from a sibling device.
- Sources queried
- AWS Braket IQM device page; IQM press release; iqmacademy.com/qpu/garnet/ (JS-rendered, empty via fetch)
- Notes
- Live calibration data referenced to the Braket console (login required).
Cloud access (cloud_access)Amazon Braket, AWS Europe (Stockholm) eu-north-1 — listed as an active gate-based QPU (arn:aws:braket:eu-north-1::device/qpu/iqm/Garnet) in Braket's current device list, checked this session; IQM Resonance lists a 'Crystal 20' 20-qubit QPU (Garnet's architecture) though that page does not use the Garnet namevendor claim
Vendor claim
- Method
- VENDOR_UNSPECIFIED
- Citation key
[iqm/iqm-garnet:cloud-access:2026-08-19]
Pricing model (pricing_model_exists)Yes — Braket on-demand self-service (pay-as-you-go) and Braket Direct dedicated-access reservations; IQM Resonance tiers: Starter (free, up to 30 credits/month), Pay-as-you-go (from $0.30/sec), Skip-the-queue (contact sales)vendor claim
Vendor claim
- Method
- VENDOR_UNSPECIFIED
- Notes
- Braket access modes from the IQM Garnet press release (2024-05-23).
- Citation key
[iqm/iqm-garnet:pricing-model-exists:2026-08-19]
Release year (release_year)Launched on Amazon Braket 2024-05-23 (first IQM QPU available cloud self-service on-demand; first Braket QPU hosted in the EU)vendor claim
Vendor claim
- Source
- IQM Quantum Computers expands access to IQM Garnet through Amazon Web Services · published 2024-05-23
- Method
- VENDOR_UNSPECIFIED
- Citation key
[iqm/iqm-garnet:release-year:2026-08-19]
QPU137 is independent and is not affiliated with, endorsed by, or sponsored by IQM. Figures above are public disclosures recorded with their sources on 2026-08-19; vendor claims are labeled as such and may not be directly comparable across measurement methods — see methodology.