Quantum/Machines/Rigetti 24-Qubit Testbed at NQCC
United Kingdom · operational · Superconducting circuits
Rigetti 24-Qubit Testbed at NQCC
Rigetti 24-Qubit Testbed at NQCC is a superconducting circuits quantum computer operated by National Quantum Computing Centre in United Kingdom. It has 24 physical qubits. It ranks 33 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 Rigetti full-stack superconducting testbed
One of the seven NQCC testbeds. The 2024 award release describes a 24-qubit Ankaa-class system; NQCC lists it as operational and said a fully operational Rigetti QPU was in the centre at its October 2024 opening. No fidelity is published for this unit.
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 | 24-qubit fourth-generation Ankaa-class QPU, derived from the 84-qubit system | Vendor reported | NQCC describes 4th-generation QPUs based on Rigetti US 84-qubit computer; the October 2024 opening report calls it a fully operational 24-qubit Ankaa-class system. | nqcc.ac.ukquantumzeitgeist.com |
| Topology | Square lattice with tunable couplers | Vendor reported | Both describe tunable couplers and a square lattice as the hallmarks of the Ankaa-class design. | quantumzeitgeist.comitdigest.com |
| Software | pyQuil, Quilc and Quil-T pulse-level control; Rigetti Tsunami control systems | Vendor reported | From the February 2024 award release, written before delivery; Riverlane also planned to add its Deltaflow.Control system and Aqueduct software. | itdigest.com |
| Access and pricing | On-premises testbed for NQCC researchers (testing, benchmarking, exploratory applications) | Vendor reported | The 2024 award release also said the system would be reachable over Rigetti Quantum Cloud Services; no price is published. | quantumzeitgeist.comitdigest.com |
| Roadmap | Pairing with Riverlane error correction stack to work toward large-scale error correction | Vendor reported | Stated at the October 2024 NQCC opening and in the February 2024 award; no later roadmap for this unit was found. | quantumzeitgeist.comitdigest.com |
Timeline
- 2024-02-05: Announced
- 2024-10: First operational
- 2026-10-07: Status checked: operational
More from National Quantum Computing Centre
- Oxford Ionics QUARTET (operational)
- Infleqtion Sqale at NQCC (operational, 100 qubits)
- ORCA PT-2 at NQCC (operational)
- Quantum Motion at NQCC (operational)
- Aegiq ARTEMIS at NQCC (operational)
- QuEra Testbed at NQCC (under construction)
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 |
|---|---|---|---|
| VLQ | IT4Innovations | 24 | operational |
| Fraunhofer IBM Quantum System One | Fraunhofer-Gesellschaft | 27 | operational |
| ORNL Pathfinder | Oak Ridge National Laboratory | 20 | operational |
| IQM Garnet | IQM Quantum Computers | 20 | operational |
| IQM Radiance 20 for TOYO at G-QuAT | TOYO Corporation | 20 | planned |
| OQC Toshiko | Oxford Quantum Circuits | 32 | operational |