NTT Quantum Technology Division

Nippon Telegraph and Telephone Corporation (NTT) is a Japanese telecommunications company founded in 1952 and headquartered in Tokyo, Japan, with Quantum Technology Division developing quantum communications, quantum key distribution, and quantum networking systems. NTT conducts pioneering quantum networking research deploying QKD networks and quantum-safe telecommunications infrastructure in Japan. The company researches quantum network technologies and quantum security, having demonstrated quantum tokens for secure transactions in 2021. NTT collaborates with Japanese quantum technology companies and government initiatives advancing practical quantum communications deployments. In early 2024, NTT joined forces with Fujitsu, Hitachi, NEC, and Mitsubishi Electric on quantum technology initiatives building national quantum secure networking testbed. NTT invests in quantum cryptography, quantum random number generation, and post-quantum cryptography preparing telecommunications infrastructure for quantum computing threats. The company serves Japanese telecommunications markets, government agencies, financial institutions, and critical infrastructure sectors requiring quantum-safe communications and quantum networking infrastructure supporting Japan’s quantum technology leadership.

2025 Developments: Development of quantum networking infrastructure and protocols continues in 2025. Research efforts focus on extending quantum communication range and reliability. Partnerships with telecommunications providers expand deployment opportunities.

Company Information

• Founded: 1952
• Country: Japan
• Website: https://www.ntt.co.jp
• Categories: quantum communications, QKD, quantum networking, telecommunications

Key People

Akira Shimada (CEO)

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