Toshiba puts three quantum-safe tools into one network platform
The QSN announcement combines post-quantum cryptography, quantum key distribution and quantum randomness. Each addresses a different part of the security problem.
Toshiba Quantum Technology
Supplies specialized optical equipment that establishes encryption keys between sites, plus software for using and managing those keys. It is a Toshiba business, not a standalone quantum-computer startup.
United Kingdom / Japan · Research reviewed 7 Sept 2026Latest record: research brief added · axis ratings unchanged.
Review history 2 records
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.
Research brief added · axis ratings unchanged
Assessment reviewed 6 Sept 2026 · Research reviewed 7 Sept 2026What changed
- Research brief
- Previously
None recorded
- Now
Initial technology, access and evidence brief
Initial assessment recorded
Assessment reviewed 6 Sept 2026Sources in this record (4)
Identity & attribution
- Organization record
- Toshiba Quantum Technology
- Recorded role
- Quantum key distribution and hybrid quantum-safe networks
- Recorded aliases
- No aliases recorded in this assessment.
- Name and period
- Toshiba Quantum Technology is part of Toshiba, not a standalone startup.
- Product scope
- Optical-fiber quantum key distribution with key-management software; post-quantum algorithms bridge separate QKD networks.
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.
Report an identity issue →What it does. Where it fits.
Optical-fiber quantum key distribution with key-management software; post-quantum algorithms bridge separate QKD networks.
Who should look closer
Network operators and security architects evaluating QKD on controlled optical links and its integration with conventional encryption.
QubitWire’s editorial assessment of practical fit.QKD systems and integration
The official catalog lists long-distance, multiplexed and flexible QKD systems. Deployment requires assessing the fiber route and security architecture.
Check the current access route ↗What the sources establish
GÉANT confirms a twin-field QKD experiment over 253.9 km of German telecom fiber at 110 secret-key bits per second. Separately, Toshiba released a PQC bridge for connecting geographically separated QKD networks in March 2026.
What remains unresolved
The 254 km result is a field experiment, and key generation rate is not encrypted-data throughput. The global bridge uses PQC; it does not demonstrate an intercontinental optical QKD link. QKD also needs authentication and secure implementation.
The next question to watch
What operational key availability, interoperability and total cost can customers document across mixed QKD/PQC networks?
A research question, not a promised milestone.QubitWire coverage
Open research questions
Editorial questions for this profile. No reviewed closure decision has been recorded; unanswered questions do not lower the official score.
What operational key availability, interoperability and total cost can customers document across mixed QKD/PQC networks?
What evidence would help
A source addressing this question must identify the named system, experiment or deployment, its conditions, measured outcome and remaining limitations. What distance, loss, fidelity and useful rate were demonstrated together?
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.
Which named system or service can I use under the documented access route?
What evidence would help
Check the current terms for qkd systems and integration. 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.
Is this a deployed network, a field trial or a laboratory link?
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.
Since your review
Scope: Toshiba Quantum Technology. Reading a page never marks its records reviewed.
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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.
| Recorded claim & source | Assessment linkage | Provenance & limits |
|---|---|---|
| Source 1 Official catalog lists long-distance, multiplexed and flexible QKD systems and links to product resources. Toshiba Quantum Key Distribution systems ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Delivery A documented QKD product family and released bridging feature provide a maintained offering. | 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 6 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 Participating network organization documents a 253.9 km German fiber experiment using twin-field QKD at 110 secret-key bits/second, with a central relay and non-cryogenic detectors. Toshiba, GÉANT, PSNC and Anglia Ruskin demonstrate QKD on commercial telecom networks ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Capability GÉANT documents a twin-field QKD experiment on commercial fiber with distance and secret-key rate stated. Integration Network and bank trials document interoperability; the newer bridge uses PQC between QKD networks. | External source; collaborators may be involved Source type: customer. 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 6 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 HSBC reports a QKD-protected EUR30 million trading scenario with BT, Toshiba and AWS, and 63 km fiber infrastructure between its headquarters and Slough data center. This is described as a trial. HSBC pioneers quantum protection for AI-powered FX trading ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Use in practice HSBC describes installed infrastructure and a completed trading-scenario trial, without claiming bank-wide production. Integration Network and bank trials document interoperability; the newer bridge uses PQC between QKD networks. | External source; collaborators may be involved Source type: customer. 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 6 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 Toshiba states its PQC bridge between separate QKD networks is available immediately using existing hardware. Satellite QKD integration is explicitly future work. Toshiba enables global connectivity for quantum-safe networks with bridging solution ↗Exact source locationNo page, figure or section locator is recorded. Open the source and check the claim in its original context. | Delivery A documented QKD product family and released bridging feature provide a maintained offering. Integration Network and bank trials document interoperability; the newer bridge uses PQC between QKD networks. | 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 6 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: 0814c89330f2062b7666075a9ae0bb223e8b0adb89ef732404fe3bd4a2440b9b. 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.
Sources & evidence
- Toshiba Quantum Key Distribution systems ↗Organization-originated source · Publication date not stated
Official catalog lists long-distance, multiplexed and flexible QKD systems and links to product resources.
- Toshiba, GÉANT, PSNC and Anglia Ruskin demonstrate QKD on commercial telecom networks ↗External source (may be a collaborator) · 24 Apr 2025
Participating network organization documents a 253.9 km German fiber experiment using twin-field QKD at 110 secret-key bits/second, with a central relay and non-cryogenic detectors.
- HSBC pioneers quantum protection for AI-powered FX trading ↗External source (may be a collaborator) · 6 Dec 2023
HSBC reports a QKD-protected EUR30 million trading scenario with BT, Toshiba and AWS, and 63 km fiber infrastructure between its headquarters and Slough data center. This is described as a trial.
- Toshiba enables global connectivity for quantum-safe networks with bridging solution ↗Organization-originated source · 2 Mar 2026
Toshiba states its PQC bridge between separate QKD networks is available immediately using existing hardware. Satellite QKD integration is explicitly future work.
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