Heron r2

by IBM

Approach

superconducting

Qubit Count

156

Logical Qubits

null

1Q Gate Fidelity

99.9%

2Q Gate Fidelity

99.7%

Coherence Time

200 µs

Gate Speed

~60 ns (ECR gate)

Connectivity

Heavy-hex lattice, tunable couplers

Operating Temp

15 mK

Cloud Access

IBM Quantum

Year

2024

Status

COMMERCIAL

About

Heron r2, announced at IBM Quantum Summit 2024, pushed two-qubit gate fidelity to 99.7% and extended coherence times. It serves as the building block for IBM's Starling multi-chip system targeting 2025 deployment.