Quantum/Machines/AWS Ocelot
USA · operational · Superconducting circuits
AWS Ocelot
AWS Ocelot is a superconducting circuits quantum computer operated by Amazon in USA. It has 9 physical qubits. It ranks 47 of 53 superconducting machines in this table by physical qubit count. 6 sourced specs are in the spec sheet. 1 published benchmark or milestone record are listed below, each marked by who measured it.
Also known as Ocelot logical-qubit memory chip
Amazon Web Services' prototype bosonic error-correction chip, announced on 27 February 2025 alongside a Nature paper. AWS reports bit-flip times approaching one second and phase-flip times of 20 microseconds, and projects that scaling the design could cut error correction overhead by up to 90 percent versus a surface code; that projection is not demonstrated. The physical qubit count of 9 follows the Nature paper, which describes five bosonic modes hosting the data cat qubits plus four ancilla transmon qubits; it counts qubits only. Amazon's news page counts 14 core components, which adds the five buffer circuits that stabilize the cat qubits.
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 | Ocelot, two bonded silicon chips of about 1 cm2 each, 14 core components | Vendor reported | AWS lists 5 data qubits, 5 buffer circuits and 4 error-detecting ancilla qubits; announced 27 Feb 2025. | aboutamazon.comthequantuminsider.com |
| Qubit type | cat qubits in resonator modes (5 data) with fixed-frequency transmon ancillas (4) | Peer reviewed | Cat qubits are stabilised by buffer modes; transmons detect phase-flip errors. | nature.comamazon.science |
| Topology | linear array of 5 cat data qubits with 4 ancilla transmons between neighbours (distance-5 repetition code) | Peer reviewed | Ancillas link to neighbouring storage modes through tunable couplers. | nature.com |
| Native gates | noise-biased CX between transmon ancilla and cat data qubit via tunable dispersive coupling | Peer reviewed | AWS describes it as the first implementation of a noise-biased gate. | nature.comamazon.science |
| Fabrication | tantalum superconducting films on silicon, flip-chip stack, made by the AWS Center for Quantum Computing | Vendor reported | Tantalum processing is stated by AWS; the Pasadena AWS team is inferred from paper affiliations and author contributions. | aboutamazon.comnature.com |
| Roadmap | several more stages of scaling planned, targeting lower logical error rates and up to 90% less QEC overhead | Vendor reported | AWS statements from 27 Feb 2025; the 90% figure is a projection, not a measurement. | aboutamazon.comamazon.science |
Milestone claims
- AWS reported a cat-qubit logical memory chip with bit-flip times near 1 s and 20 us phase-flip; claims up to 90% lower QEC overhead if scaled (projection) (2025-02, vendor reported) amazon.science
Timeline
- 2025-02-27: Announced
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 |
|---|---|---|---|
| Rigetti Novera at Montana State University | Montana State University | 9 | operational |
| Rigetti Novera at PSC (TangleLab) | PSC | 9 | planned |
| Rigetti Novera at University of Saskatchewan | University of Saskatchewan | 9 | operational |
| OQC GENESIS (New York) | Oxford Quantum Circuits | 16 | under construction |
| IQM Spark at Chungbuk National University | Chungbuk National University | 5 | operational |
| IQM Spark at TSRI | Taiwan Semiconductor Research Institute | 5 | operational |