What is the name of the organisation that collaborated with Sterlite Technologies Limited (STL) to test India's first Quantum Key Distribution (QKD) transmission in 2025?

Correct option is A

The correct answer is: (A) Centre for Development of Telematics (C-DOT)

• In 2025, Sterlite Technologies Limited (STL) collaborated with the Centre for Development of Telematics (C-DOT) to successfully test India's first Quantum Key Distribution (QKD) transmission.

• The test was conducted using a 4-core Multi-Core Fibre (MCF), enabling secure transmission of quantum and classical data over a distance of more than 100 km.

• This achievement marks a major advancement in India’s quantum communication capabilities, promoting secure and scalable telecom networks.

• C-DOT is the R&D arm of the Department of Telecommunications, Government of India, focusing on indigenous telecom technologies.

• Quantum Key Distribution (QKD) ensures ultra-secure data transmission, which is immune to conventional hacking.

• The successful trial combined quantum signal transmission in one fibre core and classical high-speed data in the other three cores.

• This test aligns with the government’s push toward building a National Quantum Communication Network.

• It strengthens India’s readiness for quantum-resilient cybersecurity solutions in strategic and commercial sectors.

• Quantum communication uses the principles of quantum mechanics to protect data using quantum cryptography.

• The National Mission on Quantum Technologies & Applications (NM-QTA) was launched by the Government of India with a budget of ₹8,000 crore for 2023–2031.

• C-DOT is also working on developing indigenous technologies like optical communication systems, 5G core, and indigenous routers.

• Quantum technologies are vital for defence, banking, and critical infrastructure, ensuring next-generation cybersecurity.

• The collaboration between public R&D institutions and private telecom firms is crucial for commercializing quantum technologies in India.