Qubit Tracker
Heron
Heron in the Qubit Tracker: every value read on the maker's own pages, with its day.
- Announced
- 4 December 2023 — newsroom.ibm.com, read 16 October 2026
- Modality
- Superconducting — quantum.cloud.ibm.com, read 16 October 2026
- Physical qubits
- 156 qubits — quantum.cloud.ibm.com, read 16 October 2026
- Logical qubits
- Not confirmed: The IBM pages reviewed do not specify a demonstrated logical-qubit count for Heron. IBM reports a 70-logical-qubit demonstration elsewhere, but does not identify Heron as the processor used.
- Two-qubit gate fidelity
- Not confirmed: IBM reports a median two-qubit error rate of 1.17E-3 for Heron r3, not a two-qubit fidelity in percent. Do not convert the error rate into fidelity.
- One-qubit gate fidelity
- Not confirmed: The IBM pages reviewed do not print a one-qubit gate fidelity in percent with a named statistic.
- The maker’s own metric
- Not confirmed: two readings disagree: [{"name":"median two-qubit error rate","value":0.00117}] and [{"name":"EPLG","value":0.0037},{"name":"Throughput (MCPS)","value":3.9}]
- Access
- Cloud — www.ibm.com, read 16 October 2026
- Status
- Available — www.ibm.com, read 16 October 2026
More from IBM
Sources
- Processor types | IBM Quantum Documentation (read 16 October 2026)
- IBM Quantum Computing | Hardware and roadmap (read 16 October 2026)
- Quantum Technology | IBM Quantum Learning (read 16 October 2026)
- IBM Debuts Next-Generation Quantum Processor & IBM Quantum System Two, Extends Roadmap to Advance Era of Quantum Utility (read 16 October 2026)
- IBM: A Decade of Quantum on the Cloud (read 16 October 2026)