Quantum/Machines/PsiQuantum Brisbane
Australia · planned · Photonic
PsiQuantum Brisbane
PsiQuantum Brisbane is a photonic quantum computer operated by PsiQuantum in Australia. Its physical qubit count has not been published. 8 sourced specs are in the spec sheet. No benchmark figures are recorded for it yet.
Also known as Queensland utility-scale quantum computer
Planned PsiQuantum machine backed by A$940 million from the Australian and Queensland governments. The April 2024 announcement targeted 1 million physical qubits and operation by the end of 2027 near Brisbane Airport. In May 2026 the site moved to Moreton Bay Central (former Petrie Paper Mill) after delays, with groundbreaking planned for June 2026. Forbes Australia reports the project has run months behind schedule, and no new official date was found. Nothing has been built or demonstrated.
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 | Omega silicon-photonic chipset family; Brisbane chip generation not stated | Vendor reported | Omega was announced Feb 2025; a Linde release says the Brisbane cryoplant will cool Omega chips, but no source says which chip generation the finished machine uses. | psiquantum.comthequantuminsider.com |
| Qubit type | Dual-rail single-photon qubits at telecom C band wavelengths | Peer reviewed | Family-wide fact from PsiQuantum's 2025 Nature paper on its photonic platform; Brisbane has not been built. | nature.compsiquantum.com |
| Topology | Modular: photonic chips in cryogenic cabinets networked by standard optical fibre | Vendor reported | June 2026 release describes cryogenic cabinets filled with photonic quantum chips and linked by fibre; the 2024 announcement calls it a modular fusion-based architecture. | psiquantum.compsiquantum.com |
| Native gates | Type II (Bell) fusion measurements on dual-rail qubits, fusion-based quantum computing | Peer reviewed | Family-wide: the Nature paper benchmarks two-qubit fusion rather than unitary gates; Brisbane is planned and unbuilt. | nature.com |
| Cooling and environment | Cryogenic cabinets cooled by a large Linde Engineering cryoplant, chips at about 4 K | Vendor reported | Linde cryoplant ordered late 2024 and described as one of the largest ever built for quantum computing; delivery is set for the second half of 2027. | psiquantum.compsiquantum.com |
| Operating temperature | 4,000 mK | Vendor reported | Both pages say the Omega chips run at 4 Kelvin; the Nature paper operated its on-chip detectors at about 2 K in benchmarks, so treat 4 K as the facility design point. | psiquantum.comthequantuminsider.com |
| Fabrication | GlobalFoundries, New York, high-volume 300 mm silicon photonics process | Vendor reported | Omega chips are designed by PsiQuantum and made at GlobalFoundries; the Nature paper describes the 300 mm foundry flow for the baseline platform. | psiquantum.comnature.com |
| Roadmap | Cryoplant delivery in second half of 2027, then commissioning before cryogenic cabinets are installed | Vendor reported | Said at the 18 June 2026 groundbreaking at Moreton Bay Central; the April 2024 plan was operation by end of 2027 and the June 2026 release gives no new operating date. | psiquantum.compsiquantum.com |
Timeline
- 2024-04-29: Announced
- 2026-05-21: Status checked: planned
Comparable photonic machines
Closest in physical qubit count within the same technology. Counts of different qubit types are not interchangeable across technologies.
| Machine | Operator | Qubits | Status |
|---|---|---|---|
| Lucy | CEA | 12 | operational |
| Xanadu Aurora | Xanadu | 12 | operational |
| ORCA PT-2 at NQCC | National Quantum Computing Centre | - | operational |
| Jiuzhang 4.0 | USTC | - | operational |
| Aegiq ARTEMIS at NQCC | National Quantum Computing Centre | - | operational |
| Quandela Belenos | Quandela | 12 | operational |