NEW DELHI,— April 9, 2026 : India has successfully demonstrated a 1,000-kilometre secure quantum communication network, marking one of the longest such networks globally and a significant milestone under the National Quantum Mission (NQM). The achievement was formally announced by the Department of Science and Technology (DST) on April 8, 2026.
The demonstration was completed in less than two years after the National Quantum Mission became operational in October 2024, substantially ahead of the original target of building a 2,000-km network over an eight-year period extending to 2030–31.
Indigenous Development and Technology Validation
The network has been developed using indigenous technology by QNu Labs, an Indian startup supported under the National Quantum Mission. The company specialises in quantum-safe cybersecurity solutions and deployed its ARMOS Quantum Key Distribution (QKD) platform for the project.
The system uses Quantum Key Distribution (QKD), a technology that transmits encryption keys using quantum principles instead of classical binary signals. This method ensures that any attempt to intercept communication can be immediately detected through disturbances in quantum states.
The ARMOS platform was independently validated in collaboration with VIAVI Solutions using the MAP-300 test platform. Testing confirmed secure key generation over distances of up to 200 kilometres on standard telecom fibre without the need for signal amplification. Multiple such links were combined to achieve the full 1,000-km network.
According to technical data, the system supports coexistence with 10 Gbps classical data traffic while maintaining a Quantum Bit Error Rate (QBER) below 4%, indicating stable and secure transmission performance.
This milestone follows an earlier 500-km defence-grade quantum communication network completed in November 2025.
Strategic Applications and Operational Capabilities
The network is designed to strengthen secure communications across multiple critical sectors. These include military and defence communications, banking and financial systems, and other forms of critical national infrastructure that require high levels of cybersecurity.
Officials stated that the system has been engineered to operate in challenging environments, including underwater and underground conditions. This expands its applicability for both civilian infrastructure and strategic deployments.
Government Review and Official Statements
The achievement was reviewed during a high-level meeting at the Department of Science and Technology chaired by Union Minister of State for Science and Technology, Dr. Jitendra Singh.
DST Secretary Dr. Abhay Karandikar described the development as a landmark advancement in secure quantum communication and said it positions India among leading countries working on quantum technologies.
Expansion of Startup Ecosystem
Alongside the network demonstration, the government has expanded its support for quantum technology startups. The number of startups backed under the National Quantum Mission has increased from eight to 17, with nine additional deep-tech ventures added to the programme.
These startups are working on a range of advanced technologies, including biosensors for disease detection, precision electronics, quantum positioning systems, photon-sensing technologies, and atomic memory solutions.
Research Activity and Industry Participation
The Technology Development Board (TDB) has reported strong industry engagement following the rollout of government support mechanisms. More than 100 research proposals were received within two months of issuing a call for submissions.
In parallel, the biotechnology sector has also seen increased activity. Nearly 200 applications have been submitted for research projects in areas such as cancer treatment, gene therapy, and bio-manufacturing, supported through the Biotechnology Industry Research Assistance Council (BIRAC).
Funding Mechanisms and Policy Support
To support the growth of deep-tech startups, the government is introducing new funding structures, including optionally convertible debt (OCD). This mechanism enables startups to raise capital while deferring equity dilution for founders, allowing greater operational flexibility during early growth stages.
These initiatives are aligned with the broader ₹1 lakh crore Research Development Innovation (RDI) Fund aimed at strengthening India’s innovation ecosystem.
National Quantum Mission Framework
The National Quantum Mission was approved by the Union Cabinet in April 2023 with a total financial outlay of ₹6,003.65 crore for the period from 2023–24 to 2030–31.
The mission’s objectives include the development of intermediate-scale quantum computers, satellite-based secure quantum communication over distances exceeding 2,000 kilometres, multi-node quantum networks incorporating quantum memories, and the establishment of international quantum-secure communication links.
The successful 1,000-km demonstration represents a key step toward achieving these targets and advancing India’s capabilities in quantum-secure communication infrastructure.
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