Quantum/Machines/Tianyan-504
China · operational · Superconducting circuits
Tianyan-504
Tianyan-504 is a superconducting circuits quantum computer operated by China Telecom in China. It has 504 physical qubits. It ranks 3 of 43 superconducting machines in this table by physical qubit count. 5 sourced specs are in the spec sheet. No benchmark figures are recorded for it yet.
Also known as Tianyan-504 504-qubit cluster
China Telecom Quantum Group's 504-qubit superconducting system, launched in December 2024 and described in a June 2026 report as brought online in 2024. The first article is paywalled, so details rest on its headline and the later report. No fidelity, coherence or chip architecture data was found in accessible sources.
Spec sheet
Technical details as the builder or a paper states them, each with its own source. A blank is a fact we could not source, not a zero. Fidelity and coherence figures are in the benchmark table below.
| Spec | Value | Basis | Note | Source |
|---|---|---|---|---|
| Processor | Xiaohong: 504-qubit superconducting chip | Vendor reported | Reported December 2024; the chip is described as matching IBM on qubit lifetime and readout fidelity but no figures were given. | english.cas.cnthequantuminsider.com |
| Fabrication | Xiaohong chip developed by the CAS Center for Excellence in Quantum Information and Quantum Physics, delivered to QuantumCTek | Vendor reported | The sources say developed, not fabricated; the system was built by China Telecom Quantum Group with CAS and QuantumCTek. | english.cas.cninterestingengineering.com |
| Software | Cqlib open-source SDK, with adapters for Qiskit, Cirq and PennyLane | Vendor reported | The Tianyan paper says all Tianyan systems including Tianyan-504 are cloud-accessible via Cqlib. | arxiv.org |
| Cloud platforms | Tianyan Quantum Cloud Platform (China Telecom) | Vendor reported | Platform launched November 2023; CAS reported over 12 million visits from more than 50 countries by December 2024. | english.cas.cnarxiv.org |
| Access and pricing | Cloud access via the Tianyan platform for users worldwide; no price found | Vendor reported | CAS says the machine is integrated into the Tianyan platform for global users. | english.cas.cnarxiv.org |
Timeline
- 2024-12: Announced
- 2024: First operational
- 2026-10: Status checked: operational
Comparable superconducting machines
Closest in physical qubit count within the same technology. Counts of different qubit types are not interchangeable across technologies.
| Machine | Operator | Qubits | Status |
|---|---|---|---|
| IBM Osprey | IBM | 433 | decommissioned |
| RIKEN Fujitsu 256-qubit | RIKEN | 256 | operational |
| Fujitsu 1,000-Qubit System | Fujitsu | 1,000 | planned |
| IBM Condor | IBM | 1,121 | operational |
| Origin Wukong-180 | Origin Quantum | 180 | operational |
| IBM Heron | IBM | 156 | operational |