AvailableIQM evidence record

Crystal 20

IQM's 20-qubit Crystal QPU has a detailed technical preprint and a comparable vendor-published benchmark set.

Compare this systemPrimary source ↗
ArchitectureSuperconducting
ModalityGate-based
Scale20 computational qubits
ConnectivitySquare lattice with tunable couplers
AccessIQM Resonance
Evidence classCurrent IQM product page and technical preprint
Published metrics

Original values and source scope.

Each field links to the source used. Missing fields are not estimated.

Largest GHZ width20 qubits

20-qubit GHZ state with fidelity greater than 0.5

Metric source ↗
Median 2Q fidelity99.51 %

Median CZ gate fidelity across 30 qubit pairs

Metric source ↗
Calculated statistics

Transparent formulas.

These diagnostics are calculated from the sourced fields above and are not a universal performance score.

CLOPS per physical qubit130.00CLOPS ÷ physical qubits

Diagnostic only; parallelism and benchmark protocol still matter.

Median 2Q error per million4,900(1 − median fidelity) × 1,000,000

Derived from the vendor-published median fidelity.

GHZ coverage100.0%GHZ width ÷ physical qubits

Does not describe arbitrary-circuit performance.

Quantum-volume exponent5log₂(quantum volume)

Quantum volume samples only a subset and topology can affect interpretation.

Software

Frameworks and access tools

Research

Studies and technical material

Technology and Performance Benchmarks of IQM's 20-Qubit Quantum Computer

Detailed hardware and system benchmark preprint

Open source ↗
Working examples

Applications and demonstrations

Full 20-qubit GHZ experiment

The IQM technical paper reports genuinely entangling all 20 qubits in a GHZ state.

View evidence ↗
Source register

Every underlying link.

  1. IQM Resonance specifications
  2. IQM QPU benchmark page
  3. 20-qubit technical preprint