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The Gen Z Protests in Nepal: A Youth Awakening That Could Reshape a Nation

Introduction Nepal, a country known for its serene Himalayan landscapes, ancient temples, and rich cultural heritage, is now witnessing a very different kind of energy—one that is being led not by climbers scaling Everest, but by young people taking to the streets, raising their voices for change. In recent months, Nepal’s Generation Z —the youngest segment of its population, born between the late 1990s and early 2010s—has sparked a wave of protests that have quickly turned into one of the country’s most important social movements in years. These demonstrations are not just about short-term grievances; they reflect a generational frustration that has been building up over time. With rising unemployment, widespread corruption, political instability, and a climate crisis that hits Nepal harder each year, young Nepalis are no longer content with waiting for leaders to fix things. Instead, they are demanding systemic change, transparency, and opportunities for the future . The protests...
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India’s Quantum Leap: DRDO and IIT Delhi Achieve Secure Communication Using Quantum Entanglement

 



A Quantum Dawn in Indian Science

In an era defined by digital transformation, the race to secure communications has reached quantum proportions. On June 16, 2025, India took a giant leap in this direction. The Defence Research and Development Organisation (DRDO) and the Indian Institute of Technology (IIT) Delhi successfully demonstrated quantum-secure communication using quantum entanglement across a free-space distance of over one kilometre.

This momentous achievement places India in an elite group of nations capable of harnessing the power of quantum physics for unbreakable communications. It also marks a significant milestone under India’s National Quantum Mission (NQM), launched in 2023 with a budget of ₹6,000 crore to propel the country into global quantum leadership.

This blog explores the science, the significance, the global context, and the future implications of this quantum breakthrough.

What Is Quantum Entanglement?

To understand the gravity of this achievement, let’s first decode quantum entanglement.

Quantum entanglement is a phenomenon where two or more particles become interconnected in such a way that the state of one instantly influences the state of the other — no matter the distance separating them. It’s one of the most bizarre and powerful consequences of quantum physics.

Einstein famously called it “spooky action at a distance.” But today, this "spooky" phenomenon is becoming the backbone of next-generation quantum communication systems.

Why Quantum Communication Matters

In traditional communication systems, even encrypted messages can be intercepted and eventually decrypted with enough computing power — especially with the rise of quantum computers.

But in quantum communication, especially using Quantum Key Distribution (QKD) through entangled photons, any attempt at interception disturbs the system, making the intrusion immediately detectable. This is what makes quantum communication virtually unhackable.

So when India demonstrates entanglement-based communication across open air (free space), it’s essentially saying: “Our communication channel can’t be secretly tapped — even by the most advanced cyber adversaries.”

The Breakthrough: DRDO and IIT Delhi’s Quantum Link

The landmark experiment was conducted over a 1.2-kilometre free-space optical path within the IIT Delhi campus. Here's what made the achievement exceptional:

  • Entangled Photons: The team used polarization-entangled photon pairs, a sophisticated type of light particle linked together at the quantum level.

  • Secure Key Generation: They successfully exchanged encryption keys at a rate of ~240 bits per second — a solid rate for real-world use.

  • Low Error Rate: The quantum bit error rate was below 7%, which indicates a highly stable and secure transmission.

This success confirms the feasibility of quantum-safe communication using entanglement even in real, uncontrolled environments — without the need for expensive fiber infrastructure.

Who Made It Possible?

The key players behind the project include:

  • DRDO Young Scientist Laboratory for Quantum Technologies (DYSL-QT), Mumbai: India's cutting-edge defense quantum research wing.

  • IIT Delhi: One of the nation’s premier academic institutions with a strong foundation in quantum optics.

  • QNu Labs, a private Indian company specializing in quantum cybersecurity, provided technical insights.

  • India’s National Quantum Mission (NQM) and MeitY (Ministry of Electronics and IT) supported foundational research and coordination.

This collaborative model reflects India's growing emphasis on academia–industry–government synergy in deep technologies.

How It Works: Behind the Tech

Let’s simplify the complex science behind the demo:

  1. Photon Pair Generation:

    • A laser beam is passed through a non-linear crystal to generate entangled photon pairs using spontaneous parametric down-conversion (SPDC).

  2. Transmission:

    • One photon from each pair is sent through free space to the receiver, while the other is retained by the sender.

  3. Measurement & Correlation:

    • Both parties measure their photons using polarizers. Due to entanglement, the results are correlated — even if they’re kilometres apart.

  4. Key Extraction:

    • These correlations are used to generate a shared secret key, which can then encrypt/decrypt messages.

  5. Eavesdropper Detection:

    • If a third party tries to intercept the photons, it disturbs the quantum state. This disturbance is measurable, triggering alarms.

India’s Quantum Journey So Far

India’s push into quantum technologies has been steady and strategic. Here are key highlights:

🇮🇳 2021:

  • DRDO tested a 100+ km QKD link between Prayagraj and Vindhyachal using optical fiber.

🇮🇳 2022:

  • ISRO tested quantum entanglement over short distances in space simulations.

🇮🇳 2023:

  • India launched the National Quantum Mission, aiming to build:

    • Quantum computers (up to 100 qubits)

    • Satellite-based quantum communication

    • Indigenous quantum networks

🇮🇳 2024:

  • India’s first full-stack 25-qubit quantum computer was announced by QpiAI under the NQM.

🇮🇳 2025:

  • This free-space 1+ km entanglement communication was successfully tested, bringing real-world quantum internet one step closer.

How India Compares Globally

Let’s see how India’s achievement fits into the global quantum race:

CountryMajor AchievementsIndia’s Comparison
🇨🇳 ChinaMicius Satellite: Entanglement over 1,200 kmIndia has ground-based 1.2 km free-space demo
🇺🇸 USAQuantum networks at national labsIndia building secure quantum zones
🇪🇺 EUPan-European Quantum Internet ProjectIndia focusing on indigenous tech under NQM
🇯🇵 JapanOptical fiber QKD tests in TokyoIndia has done similar 100+ km tests

While other nations have invested billions earlier, India is catching up rapidly with frugal innovation, academic partnerships, and mission-mode programs.

Real-World Use Cases

The significance of quantum-secure communication goes far beyond academic curiosity. Here are some high-stakes applications:

  • Defense & Military Communications: Unhackable battlefield and satellite communication.

  • Government Confidentiality: Cabinet discussions, election data, etc.

  • Healthcare Data: Secure transmission of patient and genomic data.

  • Banking & Financial Systems: Next-gen secure transactions and blockchain resilience.

  • Satellite-to-ground links: Using quantum communication for secure space-ground coordination.

Challenges to Overcome

While this breakthrough is historic, several challenges remain:

  1. Scalability: Scaling from 1 km to city-wide or nationwide links.

  2. Weather Effects: Free-space communication can be disrupted by rain, fog, or pollution.

  3. Hardware Sensitivity: Photonic equipment is delicate and costly.

  4. Standardization: Global standards for quantum networks are still evolving.

India must now focus on robust engineering, international collaboration, and private sector integration to overcome these roadblocks.

The Road Ahead: Toward Quantum Internet

The long-term goal is to establish a Quantum Internet — a global network of quantum devices that communicate via entanglement, teleportation, or QKD.

India’s next steps could include:

  • Satellite-based quantum key exchanges

  • Quantum repeater nodes across cities

  • Quantum-secure communication between defense agencies

  • Quantum encryption as a commercial SaaS product

If these become reality, India could leapfrog traditional cybersecurity and establish itself as a quantum-secure nation.

Conclusion: A Glimpse into the Future

India’s successful demonstration of quantum entanglement-based secure communication by DRDO and IIT Delhi is not just a technical feat — it is a strategic, geopolitical, and scientific leap. It reinforces India's position in the emerging global quantum ecosystem and shows that even a developing country can lead in frontier tech with focused vision and collaboration.

As cyber warfare, AI, and big data continue to evolve, the future of secure communication will not lie in stronger passwords — but in stronger physics. And India just proved it has mastered the physics of the future.

Sources;

https://youtu.be/3Rjnvo-D9gQ
https://en.wikipedia.org/wiki/Quantum_key_distribution

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