World Quantum Day is celebrated on the 14th of April every year. Background Quantum Mechanics, the study of atoms and sub-atomic particles, has now advanced to such an extent that it has now moved to the engineering domain and is leading to novel and varied applications. Researchers worldwide have utilized its principles to develop technologies such as LEDs, lasers, and ultra-precise atomic clocks used in the Global Positioning System. Considerable attention is now being paid to controlling and manipulating quantum systems for Quantum Computing, Quantum Communications, and Quantum Sensing applications. To advance the awareness and appreciation of quantum science and technology among the public worldwide, an international initiative was taken in 2022, commemorated annually as the World Quantum Day on April 14th. The World Quantum Day is celebrated on April 14, a reference to 4.14, the rounded first digits of Planck’s constant: 4.1356677×10−15 eV⋅s = 0.000 000 000 000 004 1356677 electron volt second, a product of energy and time that is the fundamental constant governing quantum physics. India celebrations 2026 India celebrated World Quantum Day with aspirations to become a global leader in various fields of Quantum Science and Technology. The Office of the Principal Scientific Adviser to the Government of India released the first edition of International Technology Engagement Strategy for Quantum, marking a significant step toward articulating India’s outward-facing strategy in Quantum Science, Technology and Innovation (QSTI), with the intent to accelerate discovery, foster innovation, and catalyse adoption across critical sectors. The strategy report provides a foundational landscape analysis to enable domestic and foreign stakeholders in government, academia, and industry to formulate context-specific action points aligned with their engagement goals complementing the ambitions of India’s National Quantum Mission (NQM) and other ongoing efforts by various agencies and stakeholders in the ecosystem. National Quantum Mission (NQM) The National Quantum Mission (NQM), conceptualized by the Prime Minister Science Technology Advisory Council (PM-STIAC) received Cabinet approval on April 19, 2023 with a total outlay of Rs 6003.65 Crore for a period of eight years. The Mission aims to seed, nurture, and scale up scientific and industrial R&D and create a vibrant & innovative ecosystem in Quantum Technology (QT). This will accelerate QT-led economic growth, nurture the ecosystem in the country, and make India one of the leading nations in the development of QT and applications. Being implemented by the Department of Science and Technology (DST), NQM envisages well-orchestrated and synergistic efforts through a hub-spoke-spike model, involving Centres of Excellence (CoEs), consortia projects, individual scientist-centric projects, etc. This mission is guided by a Mission Governing Board (MGB) and assisted by the Mission Technology Research Council (MTRC) chaired by the PSA to the Government of India. The Mission aims to establish four Thematic Hubs (T-Hubs) in domains such as (i) Quantum Computing, (ii) Quantum Communication, (iii) Quantum Sensing & Metrology, and (iv) Quantum Materials & Devices. NQM is a consortium of academia and R&D labs in collaboration with startups and industry operating as the hub-and-spoke model at the national scale involving 152 researchers from 43 institutions across 17 states and 2 UTs. This will help bring talents in the relevant areas across the country to work together for the development of the technology and its translation in myriad areas. PIB