Skip to content
QubitWire
COMPANY RESEARCH · Enabling technology

Photodigm

Photodigm manufactures compact laser diodes used as stable optical sources in quantum apparatus. Its quantum-computing relevance is directly evidenced by a laser’s role in controlling an atom–cavity experiment.

Official website ↗
United States · Research reviewed 11 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
Photodigm (organization-photodigm)
Recorded role
Single-frequency DBR laser diodes, atomic-transition light sources and optical cavity stabilization for quantum computing
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
Monolithic single-frequency semiconductor distributed-Bragg-reflector laser diodes in configurable packages.

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 →
TECHNOLOGY & ACCESS

What it does. Where it fits.

Monolithic single-frequency semiconductor distributed-Bragg-reflector laser diodes in configurable packages.

Who should look closer

Atomic and quantum-optical engineering teams requiring compact single-frequency laser components.

QubitWire’s editorial assessment of practical fit.

DBR laser components

The catalog offers wavelength and packaging choices; specific availability and custom frequency selection are handled by enquiry.

Check the current access route ↗
DOCUMENTED EVIDENCE

What the sources establish

The Harvard/MIT methods identify the laser and locking chain and report tuning across the rubidium hyperfine range.

photodigm.com ↗arXiv paper · 2410.10787v1 ↗photodigm.com ↗

What remains unresolved

The cited laser is one component of a larger research apparatus. Qubit and entanglement results are not supplier-only performance, and current availability of that exact historical model is not established.

The next question to watch

Extend independent operating and lifetime data across current laser models in quantum processors.

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

Extend independent operating and lifetime data across current laser models in quantum processors.

What evidence would help

A source addressing this question must identify the named system, experiment or deployment, its conditions, measured outcome and remaining limitations. Are performance limits stated under realistic loads and operating conditions?

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 dbr laser components. 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

Are the interfaces compatible with your existing hardware?

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 11 Sept 2026. Following stores a local bookmark; it does not send email alerts or imply a scheduled review.

Since your review

Scope: Photodigm. 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 11 Sept 2026
Recorded claim & sourceAssessment linkageProvenance & limits
Source 1

Current catalog provides wavelength, power, package and chip-architecture options with enquiry access.

Photodigm product catalog ↗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

A current configurable catalog and purchasing route establish commercial laser availability; the historic experimental model is not assumed in stock.

Published rating inputs remain unchanged.		Organization-originated source

Source type: Vendor technical documentation. 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 11 Sept 2026. Research brief reviewed 11 Sept 2026. These dates do not establish publication or experiment dates.

Report an issue with this claim →
Source 2

Harvard/MIT researchers use a Photodigm 808DBRH-TOSA near 810 nm with Vescent and TOPTICA locking equipment, reporting approximately 10 GHz tunability.

Error-Detected Quantum Operations with Neutral Atoms Mediated by an Optical Cavity — supplementary section 2.4 ↗Published 14 Oct 2024
Exact source location

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

Capability

The specified laser operates in a quantum atom–cavity apparatus with approximately 10 GHz tuning demonstrated in the methods.

Use in practice

Independent university researchers explicitly document using a named Photodigm model during quantum operations.

Integration

The paper describes actual interoperability with a Vescent offset lock, TOPTICA reference laser and cavity-stabilization loop.

Published rating inputs remain unchanged.		External source; collaborators may be involved

Source type: External research 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 11 Sept 2026. Research brief reviewed 11 Sept 2026. These dates do not establish publication or experiment dates.

Report an issue with this claim →
Source 3

Documents a current single-frequency DBR laser diode, power and package options, custom frequency selection and purchasing enquiry.

Photodigm 1064DBRH-CM product ↗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

A current configurable catalog and purchasing route establish commercial laser availability; the historic experimental model is not assumed in stock.

Published rating inputs remain unchanged.		Organization-originated source

Source type: Vendor technical documentation. 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 11 Sept 2026. Research brief reviewed 11 Sept 2026. These dates do not establish publication or experiment dates.

Report an issue with this claim →
Revision and evidence-family boundaries

Record reference: e26f804358a189d1ab86c939ded434bb786cf69c82af4947edc560237d3cb354. 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. Photodigm product catalog ↗Organization-originated source · Publication date not stated

    Current catalog provides wavelength, power, package and chip-architecture options with enquiry access.

  2. Error-Detected Quantum Operations with Neutral Atoms Mediated by an Optical Cavity — supplementary section 2.4 ↗External source (may be a collaborator) · 14 Oct 2024

    Harvard/MIT researchers use a Photodigm 808DBRH-TOSA near 810 nm with Vescent and TOPTICA locking equipment, reporting approximately 10 GHz tunability.

  3. Photodigm 1064DBRH-CM product ↗Organization-originated source · Publication date not stated

    Documents a current single-frequency DBR laser diode, power and package options, custom frequency selection and purchasing enquiry.

Keep up with the companies you follow.

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

Your updates