National Quantum Mission Advances with 1,000-km Secure Communication Network
India has taken a significant step forward in quantum technology with the successful demonstration of a 1,000-km quantum communication network under the National Quantum Mission (NQM). Achieved within less than two years of the mission’s launch, the milestone indicates faster-than-expected progress towards the target of building a 2,000-km network over an eight-year period.
The network has been developed using indigenous technology by QNu Labs, supported by the Department of Science and Technology (DST). Based on Quantum Key Distribution (QKD), the system enables highly secure transmission of encryption keys using quantum principles, where any attempt to intercept the communication can be immediately detected.
The development is expected to strengthen secure communication infrastructure across sensitive sectors such as defence, financial systems, and critical national infrastructure. An important feature of the technology is its ability to function across challenging terrains, including underwater and underground networks, which enhances its potential for both strategic and civilian applications.
The progress also reflects growing momentum under the National Quantum Mission, which was approved in 2023 with a total outlay of ₹6,003 crore. The mission aims to build capabilities across key verticals such as quantum computing, communication, sensing, and materials, while also strengthening research infrastructure and promoting industry participation.
As part of its broader objectives, the mission envisions the development of intermediate-scale quantum computers, satellite-based secure quantum communication links, and highly sensitive quantum sensors for precision applications in navigation, timing, and defence. Dedicated thematic hubs in leading academic and research institutions are being established to drive research and innovation in these areas.
In line with this, support under the mission has been extended to a total of 17 startups working in areas such as quantum-safe cybersecurity, quantum sensing, and advanced electronic systems. This is complemented by increasing participation from industry under the Research, Development and Innovation (RDI) framework, with a rising number of proposals in emerging sectors.
Overall, the demonstration of the 1,000-km quantum communication network marks an important step in India’s efforts to strengthen its secure digital infrastructure and advance its position in the global quantum technology landscape.
Source: Press Information Bureau, Government of India