Encodes quantum information in photons and aims to connect manufactured photonic components into an error-corrected system. Construct helps developers design algorithms and estimate the resources future machines would require.
United States / Australia · Research reviewed 7 Sept 2026Initial record: initial assessment recorded.
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Initial assessment recorded
Assessment reviewed 7 Sept 2026 · Research reviewed 7 Sept 2026A company profile may discuss several systems. Capabilities remain attached to the product and conditions named in each source; they do not transfer automatically to related organizations. A verified security relationship has not been attached to this record.
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NIST finalized a CHIPS R&D award of up to $100 million for PsiQuantum’s photonic quantum-computing manufacturing work.
Source checkedThe award is a public-support milestone, not confirmation of an operating utility-scale computer or recognized revenue.
Question to follow: Which next milestone would move the record from funded plan to demonstrated capability?
Dated company evidence, its limits and the next test to follow. These notes do not change a QRank score.
Sources reviewed 20 Oct 2026. Event dates remain attached to the original evidence.
PsiQuantum announced a June 2026 groundbreaking at its Australian site in Moreton Bay. The construction event is a physical infrastructure milestone for its planned photonic quantum-computing system. It is not evidence that the proposed utility-scale, fault-tolerant computer is operating or delivering applications.
Large infrastructure projects need a progress language that is more precise than a single future completion date. Site preparation, building readiness, equipment installation, subsystem qualification and integrated acceptance each retire different risks. A useful PsiQuantum profile should connect those stages to the technical dependencies they support. A building can be ready while a detector, switch or integrated optical process remains under development. Equally, a component can work while the facility required for a full system is unfinished. Keeping both timelines visible makes progress easier to understand and avoids treating one as proof of the other. The next valuable evidence would identify a completed facility stage and the operating subsystem it enables, with measurable acceptance criteria. A comparison of whole machines should wait for integrated capability evidence; a construction update can stand on its own as a consequential, correctly bounded event.
For a reader evaluating PsiQuantum, the practical question is which completed construction and manufacturing steps reduce the uncertainty of commissioning an operating system. A useful next evidence check is specific: track site readiness, installed equipment, subsystem acceptance and independently described integration milestones. A groundbreaking is evidence of project development, while a functioning fault-tolerant computer requires separate technical proof. These are proposed tests for judging a later update, not claims that the company has already passed them.
Security status: No public security verified in reviewed material; directory/watch profile only
Page header June 17; dateline June18. Construction is not a commissioned fault-tolerant computer.
Silicon photonics for fault-tolerant computing
People studying photonic architectures, fault-tolerant algorithms and the resource requirements of future applications.
QubitWire’s editorial assessment of practical fit.Construct is accessible for algorithm design, simulation and resource analysis. The reviewed sources do not establish a generally available PsiQuantum hardware-execution service.
Check the current access route ↗A 2025 Nature paper reports measured photonic modules and fusion operations. The quoted state and fusion fidelities are conditioned on photon detection and exclude loss; the paper separately measures optical losses. These are component demonstrations rather than an entire fault-tolerant computer.
The quoted state and fusion fidelities exclude photon loss and do not establish an integrated fault-tolerant computer. Facility construction and evaluation-program participation are not delivered computing capability; this maturity assessment does not forecast future scientific potential.
Can integrated systems control photon loss and error-correction overhead sufficiently to demonstrate sustained logical computation with useful end-to-end performance?
A research question, not a promised milestone.No published QubitWire stories currently match this organization. The evidence sources below provide the starting point.
Editorial questions for this profile. No reviewed closure decision has been recorded; unanswered questions do not lower the official score.
Can integrated systems control photon loss and error-correction overhead sufficiently to demonstrate sustained logical computation with useful end-to-end performance?
A source addressing this question must identify the named system, experiment or deployment, its conditions, measured outcome and remaining limitations. Does the result report errors, circuit depth and a credible classical baseline?
An editorial review must explain which part of this question the evidence resolves. A roadmap or an announcement alone does not close it.
No resolved, partial or disputed outcome is asserted without a reviewed transition and its evidence.
Which named system or service can I use under the documented access route?
Check the current terms for software available; hardware in development. Identify the system version, eligibility, restrictions and whether the result used hardware or simulation.
Current primary documentation must identify the offering, eligible user and access conditions. An unspecified company-level access claim is insufficient.
No resolved, partial or disputed outcome is asserted without a reviewed transition and its evidence.
Can you access the named system today, and under which plan?
Provide the source location, relevant product or generation, workload, resource constraints and reported uncertainty. Keep measurements, simulations and announced targets distinct.
A source reviewer must map the evidence to this exact scope. Missing disclosure remains unknown; it is not technical failure.
No resolved, partial or disputed outcome is asserted without a reviewed transition and its evidence.
Scope: PsiQuantum. Reading a page never marks its records reviewed.
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These are the existing assessment claims and their recorded criterion links. A source link is not an independent replication. New research does not change these published ratings automatically.
| Recorded claim & source | Assessment linkage | Provenance & limits |
|---|---|---|
| Source 1 PsiQuantum’s team benchmarks silicon-photonic modules, including 99.22% ± 0.12% two-qubit fusion fidelity. Reported fidelities are conditional on photon detection and exclude loss. A manufacturable platform for photonic quantum computing ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Capability Quantified photonic modules establish component-level results rather than a completed useful fault-tolerant system. | Organization-originated source Source type: paper. Independent replication, experiment date and source-version fingerprint are not separately recorded. Product and measurement scope: read the named system and conditions in this claim. No normalized product revision is assigned. Review recorded 7 Sept 2026. Research brief reviewed 7 Sept 2026. These dates do not establish publication or experiment dates. Report an issue with this claim → |
| Source 2 The June 18, 2026 announcement reports construction starting at Moreton Bay Central. Cryoplant delivery is expected in the second half of 2027, followed by commissioning and installation. PsiQuantum Breaks Ground in Australia on Site of World’s First Utility-Scale Quantum Computer ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Delivery The computing service remains proposed: the construction announcement schedules essential cryogenic infrastructure and commissioning in the future. Use in practice Industrial applications and government evaluation are identified, but the cited evidence does not establish external use of a delivered quantum computer. | Organization-originated source Source type: official. Independent replication, experiment date and source-version fingerprint are not separately recorded. Product and measurement scope: read the named system and conditions in this claim. No normalized product revision is assigned. Review recorded 7 Sept 2026. Research brief reviewed 7 Sept 2026. These dates do not establish publication or experiment dates. Report an issue with this claim → |
| Source 3 DARPA confirms PsiQuantum is entering the final US2QC phase, aimed at verification and validation of an industrially useful system. Program entry is not a completed validation. DARPA eyes companies targeting industrially useful quantum computers ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Use in practice Industrial applications and government evaluation are identified, but the cited evidence does not establish external use of a delivered quantum computer. | External source; collaborators may be involved Source type: official. Independent replication, experiment date and source-version fingerprint are not separately recorded. Product and measurement scope: read the named system and conditions in this claim. No normalized product revision is assigned. Review recorded 7 Sept 2026. Research brief reviewed 7 Sept 2026. These dates do not establish publication or experiment dates. Report an issue with this claim → |
| Source 4 Announces free open access to Construct for circuit design, algorithm simulation and resource analysis targeting future fault-tolerant computers; it does not offer execution on a delivered PsiQuantum QPU. PsiQuantum Makes Construct FTQC Software Available to All Developers ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Integration Working algorithm-development and GPU-simulation tools support preparation for future hardware; hardware-service interoperability is not yet established. | Organization-originated source Source type: official. Independent replication, experiment date and source-version fingerprint are not separately recorded. Product and measurement scope: read the named system and conditions in this claim. No normalized product revision is assigned. Review recorded 7 Sept 2026. Research brief reviewed 7 Sept 2026. These dates do not establish publication or experiment dates. Report an issue with this claim → |
| Source 5 Describes requested early access to CUDA-Q integration for GPU state-vector simulation inside Construct. These are classical simulations, not quantum-hardware results. PsiQuantum Construct Enables Utility-Scale Quantum Application Development with CUDA-Q Integration ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Integration Working algorithm-development and GPU-simulation tools support preparation for future hardware; hardware-service interoperability is not yet established. | Organization-originated source Source type: official. Independent replication, experiment date and source-version fingerprint are not separately recorded. Product and measurement scope: read the named system and conditions in this claim. No normalized product revision is assigned. Review recorded 7 Sept 2026. Research brief reviewed 7 Sept 2026. These dates do not establish publication or experiment dates. Report an issue with this claim → |
Record reference: d5e024b63dcc338407ddfbed5cabcfe0afb5b6353546855a43f18b754c20df9f. Read prior recorded revisions.
Repeated coverage can describe the same experiment. The assessment does not contain a reviewed claim-family grouping, so the number of links is never shown as a replication count. Source pages can change independently of this saved assessment; the original source text is not archived here.
PsiQuantum’s team benchmarks silicon-photonic modules, including 99.22% ± 0.12% two-qubit fusion fidelity. Reported fidelities are conditional on photon detection and exclude loss.
The June 18, 2026 announcement reports construction starting at Moreton Bay Central. Cryoplant delivery is expected in the second half of 2027, followed by commissioning and installation.
DARPA confirms PsiQuantum is entering the final US2QC phase, aimed at verification and validation of an industrially useful system. Program entry is not a completed validation.
Announces free open access to Construct for circuit design, algorithm simulation and resource analysis targeting future fault-tolerant computers; it does not offer execution on a delivered PsiQuantum QPU.
Describes requested early access to CUDA-Q integration for GPU state-vector simulation inside Construct. These are classical simulations, not quantum-hardware results.
NIST finalized a CHIPS R&D award of up to $100 million for PsiQuantum’s photonic quantum-computing manufacturing work.
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