Quantum network suppliers: products, services and deployment evidence

Commercial quantum-network purchasing can involve QKD equipment, key-management software, encryption integration or a managed telecoms service. These are different roles, and a branded quantum-safe offer may combine quantum key distribution with post-quantum cryptography. This selective directory covers six documented suppliers and service providers, reviewed on 29 September 2026. It distinguishes product availability from service coverage and operational acceptance. A buyer should begin with the communication links and security requirements it needs to protect, then establish which supplier owns each part of delivery.

What is the network service actually protecting?

QKD produces shared cryptographic key material using a physical quantum channel. It still needs an integrated security architecture. The US National Security Agency's discussion identifies authentication, implementation assurance and trusted-relay issues, and states a restrictive position for US National Security Systems. That jurisdiction-specific position should not be presented as a universal ban; the technical questions are nevertheless relevant to evaluating a supplier's broad security claims.

Define the protected endpoints and the information that remains outside the service. A network link does not automatically protect an application, compromised endpoint or stored archive. Establish whether the requirement concerns particular sites, a regional service or a wider group network. The directory below is non-exhaustive and centres on documented equipment and telecoms offers in Europe and Singapore. A supplier's international sales presence does not establish that every customer location has an orderable QKD service.

What does Toshiba supply?

Toshiba's telecoms portfolio includes long-distance, multiplexed and flexible QKD systems, alongside Q-KMS key-management technology. Its role is therefore broader than a single optical link: it supplies equipment and key-management elements that operators can integrate into services. The supplier describes multiplexing as a route to sharing existing fibre with conventional data. A buyer should request a design for its actual fibre conditions, encryption interfaces and operational responsibilities rather than assuming the catalogue's general claims apply unchanged.

For an equipment purchase, identify who performs the fibre assessment, installation, commissioning and later fault diagnosis. For a carrier-delivered service using Toshiba equipment, establish which of those responsibilities sit with the operator. The same underlying manufacturer can appear in several offers without making them identical contracts. Compare the proposed service boundary with the customer's own engineering capability before deciding which purchasing route is practical.

What roles do ID Quantique and LuxQuanta cover?

ID Quantique's published portfolio includes Clavis QKD products, the Clarion KX key-management platform and related network appliances. This makes it relevant both to QKD equipment selection and the integration of keys into a wider security environment. Ask which product generation and interfaces are included in the proposed solution. A product family name or ecosystem partnership is insufficient evidence that the exact combination has been accepted in the buyer's intended architecture.

LuxQuanta markets Nova LQ, a continuous-variable QKD platform, for telecoms deployment alongside conventional optical traffic. Its site reports coexistence and deployment evidence, including work under Madrid quantum-network conditions. These are supplier-reported results with specific configurations. Request the applicable test report, optical-loss assumptions and integration requirements. A trial on another network is useful evidence for a technical discussion, but it does not remove the need to validate the customer's route and operating conditions.

What can BT and Orange Business deliver?

BT describes its London Quantum-Secure Metro Network, developed with Toshiba, as a move towards real-world quantum-secure connectivity. BT's role is the network and service integration rather than manufacturing the QKD device. A prospective customer should request a route-specific proposal and identify whether the offer is a trial or a contracted operational service. Confirm the sites that can actually be connected and how an interruption to key generation affects the contracted connection.

Orange Business and Toshiba announced a commercial quantum-safe network service in France in June 2025. Orange Quantum Defender combines QKD and PQC within the broader service proposition. The announcement is evidence of a commercial route, not an assurance that every French or international site is covered. Ask Orange which elements are available at the intended addresses and whether the quotation includes the underlying connectivity, encryption integration and managed support.

How does Singtel's offer illustrate managed delivery?

Singtel's Quantum-Safe Network offer describes a managed service using QKD, key management and encryptors, with ID Quantique equipment identified in its domestic network proposition. Its broader hybrid offer also combines PQC and QKD. This is a useful example of buying a service rather than assembling all the components internally. It does not imply that the QKD part follows every international path taken by a hybrid connection.

For a group with Singapore and overseas sites, require a link-by-link description of the protection applied. Establish where keys originate, where trusted facilities are used and which organisation administers the equipment. The commercial benefit of managed delivery may be a clearer operating responsibility, but responsibility must appear in the contract. Marketing language about reduced complexity should not replace the customer's own assurance work or its understanding of dependencies.

What evidence should a deployment trial produce?

A useful trial measures service behaviour across realistic conditions and records the complete configuration. Ask for the available key rate under the proposed optical loss, the encryption system's consumption requirements and the response when key generation is interrupted. Check key storage, access control and alarm handling with the people who will operate the service. Catalogue distance and headline bandwidth describe different aspects of the system and should not be combined into an unsupported claim about end-to-end security.

Agree acceptance criteria and the remedies for failing them before installation. Include support coverage, replacement arrangements, software maintenance and the cost of changing endpoints. The business case should compare the proposed protection with the institution's actual requirement, including the ongoing PQC migration programme. A specialised network purchase does not discharge that wider task. For supplier analysis, distinguish equipment revenue, integration work, managed-service subscriptions and publicly funded trials: each can be commercially meaningful, but they support different conclusions about repeat demand.