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विज्ञान आणि तंत्रज्ञानGS3
GS3

IIT Gandhinagar Free Space Quantum Communication Demonstration

Source:The Hindu ↗

हे का महत्त्वाचे आहे

Free-space quantum communication is foundational for developing hack-proof cryptographic networks and enhancing national security communications. This breakthrough demonstrates indigenous capability in free-space quantum key distribution (QKD), supporting India's National Quantum Mission.

सारांश

Scientists at IIT-Gandhinagar have successfully demonstrated a quantum communication link over 5.5 kilometres of open air. This achievement marks a crucial step forward for free-space quantum key distribution (QKD), enabling secure communications without relying solely on optical fiber infrastructure, and bolstering India's strategic capabilities under the National Quantum Mission.

मुख्य मुद्दे

  • Researchers at IIT-Gandhinagar successfully demonstrated a free-space quantum communication link over a distance of 5.5 kilometres through the air.
  • The demonstration highlights advancements in secure quantum key distribution (QKD) using atmospheric channels instead of optical fibers.
  • Free-space quantum links overcome the high attenuation and infrastructure limitations of long-distance fiber-optic cables, paving the way for satellite-based and inter-city quantum communication networks.
  • This aligns with India's broader technological objectives under the National Quantum Mission (NQM) to build indigenous quantum cryptographic capabilities.

महत्त्वाच्या संज्ञा

National Quantum Mission

An ambitious initiative by the Government of India launched to foster scientific R&D, develop quantum computing, communication, and sensing technologies, and bolster national security and technological self-reliance.

UPSC context

UPSC GS Paper III (Science & Technology - Awareness in IT, Space, Computers, Robotics, Nanotechnology, Bio-technology). Tests knowledge of cutting-edge tech missions and strategic capabilities.

Source
IIT-Gandhinagar

A premier technological institute in India whose researchers recently demonstrated a pathbreaking free-space quantum key distribution link over 5.5 kilometres of open air.

UPSC context

UPSC GS Paper III (Science & Technology). Illustrates domestic R&D achievements in quantum communications and indigenous deep-tech applications.

Source

पूर्वपरीक्षा सापळा

Free-space quantum key distribution relies on complex mathematical algorithms transmitted through atmospheric channels instead of optical fibers.

Aspirants often confuse free-space QKD with traditional encrypted radio frequency or satellite internet, assuming it relies on complex mathematical algorithms rather than fundamental quantum mechanics.

संबंधित स्थिर संकल्पना

Science and Technology - Quantum Technology

How does Quantum Key Distribution (QKD) ensure unconditional security under quantum mechanics?

  • Observer Effect: Any interception or eavesdropping measurement alters the quantum state of photons due to the observer effect, immediately alerting the communicating parties.
  • Physical Security: Unlike mathematical algorithms (RSA, ECC), QKD security relies on the laws of physics, making it theoretically immune to quantum computer decryption.
  • Symmetric Encryption: The shared random secret key is used solely for symmetric encryption (like One-Time Pads), ensuring absolute cryptographic privacy.
Science and Technology - Government Schemes

What are the primary thematic pillars and financial outlay of India's National Quantum Mission (NQM)?

  • Financial Outlay: Approved with an outlay exceeding ₹6,000 crore to scale scientific and industrial R&D in quantum technologies.
  • Core Verticals: Focuses on four core verticals: Quantum Computing, Quantum Communication, Quantum Sensing & Metrology, and Quantum Materials & Devices.
  • Strategic Targets: Aims to develop satellite-based secure quantum communications between ground stations over 2,000 km and inter-city QKD networks.

आंतर-विषय नमुने

  • Quantum Tech + Strategic Defense Networks

    Free-space QKD connects cutting-edge quantum communication science with military satellite communications and strategic border surveillance networks under the Ministry of Defence.

  • NQM + Indigenous Cryptographic Sovereignty

    The National Quantum Mission links high-tech research grants with India's techno-nationalist push for indigenous cryptographic security and sovereign data sovereignty.

NQM targets + QKD operational principles (observer effect) likely to be tested in a multi-statement Prelims question.

संबंधित PYQ · 1

संबंधित PYQ · 1

  • 2022PrelimsGS1

    Which one of the following is the context in which the term "qubit" is mentioned ?