The National Quantum Mission (NQM) has reached a pivotal technical landmark with the successful demonstration of a 1,000-km quantum communication network, one of the longest in the world. Announced by Union Minister for Science & Technology Dr. Jitendra Singh during a review of the Department of Science and Technology (DST), this achievement comes less than two years after the mission’s October 2024 launch. The milestone significantly outpaces the original eight-year roadmap, which aimed for a 2,000-km reach, and establishes a secure national backbone for defense, financial systems, and critical infrastructure using entirely indigenous technology.
The 1,000-km network was enabled by QNu Labs, a startup supported under the NQM that specializes in quantum-safe cybersecurity. To ensure the reliability of this infrastructure, QNu Labs conducted an independent validation study with VIAVI Solutions using the industry-standard MAP-300 test platform. This study established that the underlying ARMOS Quantum Key Distribution (QKD) platform can achieve secure key generation over distances of up to 200 km on standard telecom fiber (40 dB loss) without signal amplification. By chaining these high-performance links, the NQM has been able to scale toward its current 1,000-km benchmark.
A critical technical breakthrough highlighted in the validation is the ability of the quantum signal to coexist with 10 Gbps classical data traffic on the same fiber. Utilizing a proprietary decoy-state Differential Phase Shift (DPS) protocol, the ARMOS platform effectively doubles the transmission range of conventional QKD systems while maintaining a Quantum Bit Error Rate (QBER) below 4%. At typical metro distances, the system achieves generation rates of 8,000 bits per second, providing the high-speed entropy required to secure real-time, high-value data flows without requiring a costly redesign of existing fiber networks.
The mission’s success is reinforced by an expanding ecosystem of deep-tech ventures. The government recently extended support to nine additional startups, bringing the total to 17 under the NQM umbrella. These new entries, including Sense-XT, ORVISSEMI, and QuBeats, are diversifying India’s quantum capabilities into photon sensing, atomic memory, and quantum positioning systems. This “mission-mode” approach aims to create a full-stack sovereign industry, ensuring that every component—from the materials and chips to the algorithmic control layers—is developed and manufactured domestically.
The review also underscored a shift in how deep-tech innovation is financed in India. The Technology Development Board (TDB) and BIRAC have reported a surge in activity, with over 100 deep-tech and 200 biotech proposals currently under evaluation. To maintain this momentum, the government is increasingly employing optionally convertible debt (OCD), a financial instrument that provides essential capital to startups without immediate equity dilution. This strategy is intended to bridge the “valuation gap” for emerging technologies and attract significant private investment alongside public funding.
By integrating these validated QKD links into a 1,000-km sovereign shield, India is actively mitigating “harvest now, decrypt later” threats. Dr. Jitendra Singh emphasized that the rapid progress of the National Quantum Mission positions India at the forefront of the global quantum race, moving beyond theoretical research into the era of “Quantum Utility.” As the mission moves toward its next target of 2,000 km, the focus will remain on transparency, structured evaluation, and the scaling of these indigenous technologies for both civilian and strategic governmental applications.
For the official government briefing on the 1,000-km milestone, consult the PIB Delhi release here. Technical performance data regarding the ARMOS validation is available via the QNu Labs research report here and the VIAVI Solutions partnership summary here.
These findings follow a sequence of rapid infrastructure gains for India’s National Quantum Mission, including the 500-km defense-grade network demonstrated in November 2025 here and the 1,000-km inter-city milestone finalized in March 2026 here, as the mission moves toward its ultimate 2,000-km national backbone objective by the end of 2026.
April 9, 2026
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