Skip to content
QubitWire
COMPANY RESEARCH · Networking

QphoX

QphoX announced its Quantum Transducer product in March 2026 and identified IBM as an early evaluator. The device addresses the interface between microwave and optical quantum signals. Product availability and evaluation are concrete milestones, but they do not establish a working distributed fault-tolerant computer.

Official website ↗
Netherlands · Research reviewed 20 Oct 2026

Initial record: initial research brief 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.

  1. Initial research brief recorded

    Research reviewed 20 Oct 2026

    Open this evidence record →

    Sources in this record (1)
Identity & attribution
Organization record
QphoX (organization-103)
Recorded role
Quantum Networking & Communications
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
Microwave-to-optical quantum transduction

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 →

Company evidence and analysis

Dated company evidence, its limits and the next test to follow. These notes do not change a QRank score.

QphoXMicrowave-to-optical quantum transduction

Sources reviewed 20 Oct 2026. Event dates remain attached to the original evidence.

QphoX announced its Quantum Transducer product in March 2026 and identified IBM as an early evaluator. The device addresses the interface between microwave and optical quantum signals. Product availability and evaluation are concrete milestones, but they do not establish a working distributed fault-tolerant computer.

An interconnect has to preserve information while changing how it travels. That makes efficiency and noise inseparable: transmitting more signal is not useful if the conversion also introduces too much uncertainty. A good QphoX profile should specify the complete boundary, including coupling, filtering and the operating temperature. The relevant comparison may differ between reading out a device and transferring quantum information between devices, so those use cases should not share a single unlabeled score. The strongest next evidence would show an end-to-end quantum protocol with the transducer in place, reporting both successful events and the resources consumed in attempts that fail. A customer evaluation can make that test practical, but the evaluation’s existence is not its result. Keeping those stages explicit lets readers follow a strategically important component without assuming the network it is intended to enable already exists.

For a reader evaluating QphoX, the practical question is whether a transducer preserves quantum information at useful efficiency within a realistic link budget. A useful next evidence check is specific: request bidirectional efficiency, added noise, bandwidth, thermal load and an evaluation result from the intended interface. Product availability and a named evaluator are different from customer qualification or a deployed quantum network. 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

Facts, comparisons and next evidence

At a glance

  • label
    Quantum role
    value
    Microwave-to-optical transduction
  • label
    Evidence date
    value
    2026-03-12
  • label
    Assessment action
    value
    Evidence enrichment

Dated milestones

  • date
    2026-03-12
    Date scope
    source publication date; unknown if undated
    event
    Transducer product and evaluation announced
    status
    Published primary evidence; retain the narrower maturity statement
    what it does not establish
    Product availability and a named evaluator are different from customer qualification or a deployed quantum network.

Quantum role

layer
Microwave-to-optical transduction
Question
Whether a transducer preserves quantum information at useful efficiency within a realistic link budget.

Questions for comparison

  • Conversion efficiency and added noise together
  • Operating temperature and full optical/microwave boundary
  • End-to-end protocol success rate

Related approaches

  • name
    Welinq
    relationship
    Proposed comparison of relevant dimensions; not a claim of equivalent products or a ranking
    dimensions
    • Conversion efficiency and added noise together
    • Operating temperature and full optical/microwave boundary
    • End-to-end protocol success rate
  • name
    Photonic Inc.
    relationship
    Proposed comparison of relevant dimensions; not a claim of equivalent products or a ranking
    dimensions
    • Conversion efficiency and added noise together
    • Operating temperature and full optical/microwave boundary
    • End-to-end protocol success rate

Limits and missing evidence

  • Product availability and a named evaluator are different from customer qualification or a deployed quantum network.
  • Independent evaluation outcome
  • Quantum-state-transfer measurement
  • Integrated bandwidth, noise and thermal-resource specification

What would change this assessment

trigger
Request bidirectional efficiency, added noise, bandwidth, thermal load and an evaluation result from the intended interface.
Evidence needed
Dated primary technical report, product specification or customer/issuer disclosure directly answering the test.
Test
Identify the configuration, time boundary and measured outcome; retain unsuccessful attempts and stated limitations.
Limit
Product availability and a named evaluator are different from customer qualification or a deployed quantum network.

A starting question

question
What does a quantum transducer translate?
answer
It connects different physical carriers of quantum information, such as microwave and optical signals. A useful translation must preserve the relevant state while controlling loss and noise. A conversion percentage alone cannot describe all of that.
Original sources and scope
  1. QphoX launches quantum transducer product ↗Source dated 12 Mar 2026

    Product launch and IBM evaluation are different from operating a distributed fault-tolerant workload.

QphoXPrivate industry context; no public security added

Sources reviewed 20 Oct 2026. Event dates remain attached to the original evidence.

Announced or reported: QphoX launched its Quantum Transducer and identified IBM as an early evaluator.

Still conditional: Evaluation does not establish purchase scale, accepted performance, recognized revenue or a deployed quantum network.

The business milestone to follow is the conversion of an evaluation into a qualified product relationship. A prominent evaluator can give a component meaningful exposure, but the next evidence must say what was tested and whether it met the intended use case. For a transducer, efficiency, noise, bandwidth and the full operating environment should be measured together. A useful watch card then asks how much integration work the customer must perform and whether the same component can serve another customer without substantial redesign. Those questions connect a scientific interface to a repeatable supplier business. Financial terms and private valuation should remain blank where undisclosed. The most informative next update is an accepted configuration or externally described protocol result, followed by repeat use or a disclosed commercial commitment.

Distinguish a launch and named evaluation from qualification, procurement and a completed deployment. The concrete next evidence is: evaluator result and purchase or acceptance evidence under the intended cryogenic and optical conditions. An evaluation relationship may produce useful feedback without becoming a revenue-generating deployment. This watch record should change when that evidence changes, with the original event and reporting period preserved so readers can distinguish a new outcome from a refreshed page.

Facts, comparisons and next evidence

At a glance

  • label
    Commercial evidence stage
    value
    Product evaluation
  • label
    Catalyst date
    value
    2026-03-12
  • label
    Security treatment
    value
    Private/industry watch; no verified public security

Dated milestones

  • date
    2026-03-12
    event
    Product launch and named evaluation
    status
    Product evaluation
    Remaining condition
    See this card’s remaining-condition panel for the complete unresolved scope.

Cash and revenue boundary

Question
Distinguish a launch and named evaluation from qualification, procurement and a completed deployment.
risk
An evaluation relationship may produce useful feedback without becoming a revenue-generating deployment.
realized or announced
See this card’s announced-fact panel; the complete source-backed state is recorded there once.
still conditional
See this card’s remaining-condition panel; keep its qualifications attached to the fact.

What would change this assessment

Evidence needed
Evaluator result and purchase or acceptance evidence under the intended cryogenic and optical conditions.
Test
Distinguish a launch and named evaluation from qualification, procurement and a completed deployment.
Limit
An evaluation relationship may produce useful feedback without becoming a revenue-generating deployment.

Basis for comparison

dimensions
  • Noise and efficiency
  • qualification stage
  • conversion to orders
rule
Compare the same period, currency, instrument or contract status. Unknown values stay blank; no cross-company score is supplied.

Limits and missing evidence

  • An evaluation relationship may produce useful feedback without becoming a revenue-generating deployment.
  • Is evaluation being mislabelled as a large customer win?
  • Does the intended protocol require performance beyond the tested operating point?

Measures to follow

  • Evaluation-to-qualification conversion
  • Joint efficiency/noise/bandwidth specification
  • Repeatability across customer integrations

Documents still needed

  • Evaluation result and accepted use case
  • Complete component operating requirements
  • Commercial commitment if disclosed
Original sources and scope
  1. QphoX launches quantum transducer product ↗Source dated 12 Mar 2026

    Product launch and IBM evaluation are different from operating a distributed fault-tolerant workload.

TECHNOLOGY & ACCESS

What it does. Where it fits.

Microwave-to-optical quantum transduction

Who should look closer

Whether a transducer preserves quantum information at useful efficiency within a realistic link budget.

QubitWire’s editorial assessment of practical fit.

Company and product information

See the official source for current contact and product access. No open processor access or completed customer acceptance is inferred.

Check the current access route ↗
DOCUMENTED EVIDENCE

What the sources establish

QphoX announced its Quantum Transducer product in March 2026 and identified IBM as an early evaluator. The device addresses the interface between microwave and optical quantum signals. Product availability and evaluation are concrete milestones, but they do not establish a working distributed fault-tolerant computer.

qphox.eu ↗

What remains unresolved

Product availability and a named evaluator are different from customer qualification or a deployed quantum network; Independent evaluation outcome; Quantum-state-transfer measurement; Integrated bandwidth, noise and thermal-resource specification.

The next question to watch

Request bidirectional efficiency, added noise, bandwidth, thermal load and an evaluation result from the intended interface.

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

Request bidirectional efficiency, added noise, bandwidth, thermal load and an evaluation result from the intended interface.

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.

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 company and product information. 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

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.

Suggest evidence

Questions are drawn from the existing brief and sector reading guide. Research brief reviewed 20 Oct 2026. Following stores a local bookmark; it does not send email alerts or imply a scheduled review.

Since your review

Scope: QphoX. 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 →

A claim-to-assessment source trace is not available for this directory record.

CHECK THE ORIGINALS

Sources & evidence

  1. QphoX launches quantum transducer product ↗Company primary announcement · 12 Mar 2026

    QphoX announced its Quantum Transducer product in March 2026 and identified IBM as an early evaluator. The device addresses the interface between microwave and optical quantum signals. Product availability and evaluation are concrete milestones, but they do not establish a working distributed fault-tolerant computer.

Keep up with the companies you follow.

Follow companies to find their published coverage here. Email alerts are not enabled.

Your updates