SCIENCE

Latest inventions in science and technology

India’s first 500 km Quantum Key Distribution (QKD) network

  • A start-up supported under the National Quantum Mission (NQM) — QNu Labs Pvt. Ltd. — has successfully demonstrated India’s first 500 km Quantum Key Distribution(QKD) network
  • Quantum Key Distribution (QKD) is a secure communication technology that uses the laws of quantum physics to generate and exchange encryption keys between two parties.
  • Unlike traditional encryption, it ensures that any attempt to intercept or observe the key instantly alters the system, making eavesdropping detectable.
  • Developed by: The Bengaluru-based quantum startup QNu Labs Pvt. Ltd., supported by the Department of Science and Technology (DST) under the National Quantum Mission (NQM).

Space

First PSLV made by private firms

  • The first Polar Satellite Launch Vehicle (PSLV) built by a private consortium led by Hindustan Aeronautics Limited (HAL) and Larsen & Toubro (L&T) will be launched in February 2026.
  • This marks the first time a PSLV rocket has been developed entirely by private industry under ISRO’s supervision.
  • About 80%–85% of the PSLV systems are developed by private industries.
  • Around 450 Indian industries are currently contributing to India’s space programme.
  • There are over 330 Indian space start-ups active in the sector.

Recent ISRO Achievement

  • On November 2, 2025, ISRO successfully placed its heaviest communication satellite CMS-03 into orbit using the LVM-3 M5 (“Bahubali”) rocket.
  • About 80–85% of the systems in this mission were also supplied by Indian industries, showcasing the strong private sector role.
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