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COMPANY RESEARCH · Software & applications

QunaSys

Provides building blocks for circuits and measurements, reusable algorithms and tools to evaluate their execution and resource requirements.

Official website ↗
Japan · Research reviewed 7 Sept 2026

Initial record: initial assessment recorded.

Review history 1 record

Record dates use UTC and show when an assessment or clarification was saved. Review dates show the evidence check. Earlier records were recovered from QubitWire’s source history; no earlier score movement is inferred.

Identity & attribution
Organization record
QunaSys (organization-058)
Recorded role
Quantum chemistry algorithms and research SDK
Recorded aliases
No aliases recorded in this assessment.
Name and period
No dated name or ownership transition is recorded here. An alias is a search aid, not evidence of a legal ownership relationship.
Product scope
Modular quantum algorithms, chemistry and resource estimation

A 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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TECHNOLOGY & ACCESS

What it does. Where it fits.

Modular quantum algorithms, chemistry and resource estimation

Who should look closer

Quantum-chemistry researchers and developers testing how an algorithm maps onto present or future hardware.

QubitWire’s editorial assessment of practical fit.

Open-source SDK

Install the QURI suite and follow its simulation or real-device guides. Hardware execution requires the selected backend's access and supported operations.

Check the current access route ↗
DOCUMENTED EVIDENCE

What the sources establish

An Osaka preprint reports QURI Parts and OQTOPUS interfacing in a quantum-chemistry workflow, with selected reaction calculations agreeing with classical references. The authors include a QunaSys technical adviser.

arXiv paper · 2606.06015 ↗

What remains unresolved

The complete chemistry pipeline uses classical embedding and post-processing. Its result should not be attributed solely to the SDK or read as proven commercial advantage.

The next question to watch

Can independent chemistry teams reproduce useful accuracy while reporting the complete quantum and classical cost?

A research question, not a promised milestone.

QubitWire coverage

No published QubitWire stories currently match this organization. The evidence sources below provide the starting point.

Open research questions

Editorial questions for this profile. No reviewed closure decision has been recorded; unanswered questions do not lower the official score.

Open research question

Can independent chemistry teams reproduce useful accuracy while reporting the complete quantum and classical cost?

What evidence would help

A source addressing this question must identify the named system, experiment or deployment, its conditions, measured outcome and remaining limitations. Does the result count sampling, mitigation and classical processing costs?

What would resolve it?

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.

Suggest evidence
Open research question

Which named system or service can I use under the documented access route?

What evidence would help

Check the current terms for open-source sdk. Identify the system version, eligibility, restrictions and whether the result used hardware or simulation.

What would resolve it?

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.

Suggest evidence
Open research question

Does the tool support your intended hardware and workflow?

What evidence would help

Provide the source location, relevant product or generation, workload, resource constraints and reported uncertainty. Keep measurements, simulations and announced targets distinct.

What would resolve it?

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.

Suggest evidence

Questions are drawn from the existing brief and sector reading guide. Research brief reviewed 7 Sept 2026. Following stores a local bookmark; it does not send email alerts or imply a scheduled review.

Since your review

Scope: QunaSys. Reading a page never marks its records reviewed.

Keep a baseline and explicitly mark the evidence you have reviewed. This optional journal stays in this browser.

Existing material records remain available after setup. Routine rechecks and initial entries are excluded from material counts.

Public 7-day, 30-day & full history →

From claim to assessment

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.

Source references in method 1.0 · assessment reviewed 7 Sept 2026
Recorded claim & sourceAssessment linkageProvenance & limits
Source 1

Documents Parts, Algo and VM, including circuit construction, real-device guides, resource estimation and release information.

QURI SDK Documentation ↗Published Not recorded
Exact source location

No page, figure or section locator is recorded. Open the source and check the claim in its original context.

Delivery

Public documentation and the open-source repository provide usable libraries, guides and maintenance resources.

Integration

Reusable Parts/Algo/VM libraries and documented simulator, Braket and Qiskit pathways support maintained integration.

Published rating inputs remain unchanged.		Organization-originated source

Source type: technical. 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

Provides the open-source SDK library suite and development resources for quantum algorithms across simulators and processors.

QunaSys QURI SDK repository ↗Published Not recorded
Exact source location

No page, figure or section locator is recorded. Open the source and check the claim in its original context.

Delivery

Public documentation and the open-source repository provide usable libraries, guides and maintenance resources.

Integration

Reusable Parts/Algo/VM libraries and documented simulator, Braket and Qiskit pathways support maintained integration.

Published rating inputs remain unchanged.		Organization-originated source

Source type: technical. 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

University of Osaka authors report hardware-assisted chemistry using QURI Parts and OQTOPUS for quantum-classical interfacing; the method combines quantum sampling with classical embedding. Coauthor Wataru Mizukami is a QunaSys technical adviser; this is not independent validation.

Quantum computing for accurate large-scale electronic-structure calculations: DFT-embedded, post-processed quantum-selected configuration interaction ↗Published 4 Jun 2026
Exact source location

No page, figure or section locator is recorded. Open the source and check the claim in its original context.

Capability

University-led chemistry experiments with adviser coauthorship use QURI tooling under specified hardware and model conditions, with classical references.

Use in practice

University of Osaka researchers explicitly report QURI Parts use in their hardware workflow.

Published rating inputs remain unchanged.		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 4

Names Wataru Mizukami as a technical adviser, establishing the affiliation of a coauthor on the reviewed chemistry paper.

QunaSys leadership and advisers ↗Published Not recorded
Exact source location

No page, figure or section locator is recorded. Open the source and check the claim in its original context.

Published rating inputs remain unchanged.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 →
Revision and evidence-family boundaries

Record reference: 36c9dc18ec3dda7eda5f709267abd5bc98953949a9ee1013bf19f82d6452e4b4. 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.

CHECK THE ORIGINALS

Sources & evidence

  1. QURI SDK Documentation ↗Organization-originated source · Publication date not stated

    Documents Parts, Algo and VM, including circuit construction, real-device guides, resource estimation and release information.

  2. QunaSys QURI SDK repository ↗Organization-originated source · Publication date not stated

    Provides the open-source SDK library suite and development resources for quantum algorithms across simulators and processors.

  3. Quantum computing for accurate large-scale electronic-structure calculations: DFT-embedded, post-processed quantum-selected configuration interaction ↗Organization-originated source · 4 Jun 2026

    University of Osaka authors report hardware-assisted chemistry using QURI Parts and OQTOPUS for quantum-classical interfacing; the method combines quantum sampling with classical embedding. Coauthor Wataru Mizukami is a QunaSys technical adviser; this is not independent validation.

  4. QunaSys leadership and advisers ↗Organization-originated source · Publication date not stated

    Names Wataru Mizukami as a technical adviser, establishing the affiliation of a coauthor on the reviewed chemistry paper.

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