Modalities

QKD

Organisations tagged quantum key distribution. 9 records use this tag. A company can carry more than one.

China Telecom Quantum Group

China, China

Wholly owned quantum group of China Telecom. QuantumCTek’s own English profile says the listed company is held by China Telecom Quantum Group. The Asia brief dates the controlling stake at about January 2025 and groups China Telecom with Mobile and Unicom as carrier QKD operators. Not a separate gate-model computer maker in the brief.

ID Quantique

Geneva, Switzerland

QKD, quantum random-number generation, and quantum-safe products. Swiss brand under a US strategic owner.

QNu Labs

Bengaluru, India

India’s leading quantum-secure communications vendor in the brief: QKD, PQC, and QRNG. Army and SBI deployments were reported. A long QKD demonstration under the National Quantum Mission was highlighted by DST; distance and metrics should be checked against primary sources.

QuantumCTek

Hefei, China

QKD hardware, the national quantum network, and the Tianyan quantum cloud. First Chinese listed quantum company (2020). 2025 revenue about RMB 310 million was reported, with thin profit and a first-quarter 2026 loss. Backbone distance claims should be treated as company or state-asserted.

QuintessenceLabs

Canberra, Australia

Quantum cybersecurity: quantum random-number generators, key management, and quantum-safe communications for government and enterprise. About A$20 million raised in March 2025, with the NRFC leading A$15 million. A revenue business, unlike many pre-revenue hardware peers.

SK Telecom

Seoul, South Korea

QKD and QRNG on the telecom network, plus an equity partnership with IonQ. The brief describes SKT as the primary commercial quantum-computing access channel for Korean enterprises. Not a QPU vendor.

SpeQtral

Singapore, Singapore

Satellite and space QKD. Partnerships with SES and Thales Alenia Space were reported.

ThinkQuantum

Padua, Italy

QKD and the QuKy platform. A Vodafone Portugal demonstration in 2026 is cited, with EuroQCI-related work.

Toshiba Quantum

Kawasaki, Japan

Multiplexed QKD with commercial deployments in the UK, Japan, and elsewhere. Grouped by the brief with ID Quantique and QuantumCTek as a world-class QKD vendor.