Sansad TV | Published on Aug 16, 2025
Samvaad: Interview with Prof. Bhaskar Kanseri, Chair Professor, Dept. of Physics, IIT-D |16 Aug,2025
In a landmark scientific breakthrough, India has taken a decisive step into the quantum future. In June this year, researchers at IIT Delhi, under the leadership of Professor Bhaskar Kanseri, successfully demonstrated quantum entanglement-based free-space Quantum Secure Communication - a first of its kind in the country over a distance of more than one kilometer. The experiment, conducted under the DRDO-Industry-Academia Centre of Excellence, marks a new era in secure communications and also strengthens India's position in the global quantum race. Today, we are joined by the scientist leading this breakthrough - Professor Bhaskar Kanseri –
who will talk to us about the achievement, the challenges he and his team faced while carrying out the experiment, and what the breakthrough means for India's future in quantum technologies.
Guest: Prof. Bhaskar Kanseri, Chair Professor, Dept. of Physics, Indian Institute of Technology Delhi (IIT-D)
Anchor: Teena Jha, Producer: Sagheer Ahmad
India’s Quantum Leap: IIT-Delhi Achieve Secure 1 km Free-Space Quantum Communication
Vajiram & Ravi | Published on Jun 22, 2025
Recently, the Ministry of Defence announced that IIT-Delhi and DRDO scientists successfully demonstrated quantum communication over a distance of more than 1 km in free space, marking a major breakthrough in quantum cybersecurity....
No strings attached: IIT-Delhi sends secure quantum messages wire-free; tech covers 1km distance
The Times of India | Published on Jun 19, 2025
Researchers at IIT Delhi, in collaboration with DRDO, have achieved a breakthrough in quantum secure communication, successfully transmitting messages over 1km through free space. This advancement, utilizing quantum entanglement, ensures virtually unhackable communication, crucial for sectors like defense and finance. The experiment overcomes challenges posed by Delhi's atmospheric conditions, marking a significant leap in India's quantum technology capabilities.
CNN-News18 | Published Jun 17, 2025
India’s Quantum Leap: DRDO & IIT Delhi Achieve Unbreakable Secure Communication | Explained
India has achieved a groundbreaking milestone in quantum technology! 🇮🇳 In a joint feat by DRDO and IIT Delhi, researchers have successfully demonstrated quantum entanglement-based free-space secure communication over a distance of more than 1 km. This innovation marks a major step toward unbreakable encryption—a crucial advancement for sectors like defence, finance, telecommunications, and national security. With real-time applications in quantum key distribution, quantum networks, and eventually the quantum internet, this success cements India’s place in the global race for quantum supremacy.
Raksha Mantri Rajnath Singh hailed it as a potential game-changer in future warfare.
DRDO & IIT Delhi demonstrate Quantum Entanglement-Based Free-Space Quantum Secure Communication over more than 1 km distance
DRDO | Ministry of Defence | Published on Jun 16, 2025
India has entered into a new quantum era by successfully demonstrating an experimental advancement through DRDO-Industry-Academia Centre of Excellence (DIA-CoE), IIT Delhi. The free-space quantum secure communication using quantum entanglement over a distance of more than one km was achieved via a free-space optical link established on the IIT Delhi campus.
Sponsored Research and Consultancy Office IITH | Published on Feb 21, 2024
IInvenTiv 2024 DS4: Quantum Secure Communication (IIT Delhi)
The quantum era is approaching, and quantum computers are already being developed. In this scenario, current cryptography methods are prone to be broken and compromised. Quantum key distribution (QKD) offers the new generation security solution, which does not rely on computationally complex problems and utilizes laws of quantum Physics for generation and distribution of keys. This technology of national importance promises to transform the field of cryptography by providing an information-theoretic level of provable security, which is impossible to break even for quantum computers. This cyber-security solution would have major impact in securing
defence sector, banking, mobile and payment sector, data centres, and other strategic areas. We have been developing single and entangled photon-based telecom compliant QKD technologies, which can share keys using existing telecom grade fibre infrastructure. Recently, we have shown first intercity quantum secure communication in India between Prayagraj and Vindhyanchal for more than 100km underground fibre using phase encoding QKD. This scheme has been further optimized for longer secure distance and low QBER leading to globally longest distance (380km) fibre QKD using differential phase shift (DPS) protocol. QKD using quantum entanglement tolerates higher channel loss, is more robust to environmental fluctuations, provides extra layer of security and very high randomness, and simplifies the quantum key analysis. In this exhibit, we demonstrate a prototype of entanglement distribution using 50km telecom grade fibre, which can be used for quantum key generation and highly secure key exchange between users. We aim to reduce the need of trusted nodes for enabling long distance quantum secure communication networks.
IIT Delhi achieves QKD for 380 km in standard telecom fiber
The Hans India | Published on Oct 6, 2023
New Delhi: In a recent experimental breakthrough on secure quantum communication, researchers at IIT Delhi have achieved a trusted-node-free quantum key distribution (QKD) up to 380 km in standard telecom fiber with a very low quantum bit error rate (QBER).
The IIT Delhi said that this long secure length is the highest achieved so far...
India enters the “Quantum Key Distribution” club
Analytics India Magazine | Published on March 4, 2022
Quantum key distribution works by transmitting millions of photons (polarised light particles) over a fibre optic cable from one entity location to another to create a bitstream of ones and zeroes. Social media was abuzz upon the news of successful testing of quantum key distribution in India. While it is beyond a layman’s understanding, congratulations were poured in for DRDO IIT-Delhi for this unique achievement.
देश में पहली बार 'क्वांटम की डिस्ट्रीब्यूशन लिंक' का सफल परीक्षण, जानें इस तकनीक के क्या होंगे लाभ
Jagran Prakashan | Published on Feb 24, 2022
भारत में पहली बार 'क्वांटम की डिस्ट्रीब्यूशन लिंक' का सफलतापूर्वक परीक्षण किया गया। DRDO और IIT-दिल्ली के विज्ञानियों की संयुक्त टीम ने उत्तर प्रदेश में प्रयागराज और विंध्याचल के बीच 100 किलोमीटर से अधिक की दूरी के बीच क्वांटम की (कुंजी) डिस्ट्रीब्यूशन लिंक का सफलतापूर्वक प्रदर्शन किया। रक्षा अनुसंधान और विकास संगठन (DRDO) ने इस बारे में जानकारी दी है।
EMERGING TECHNOLOGIES: IIT Delhi researchers achieve secure quantum communication for 380 km in standard telecom fiber
Education Times | Published on Oct 7, 2023
This long secure length is highest achieved so far, not only in India but first globally for DPS QKD protocol. Scientists at Indian Institute of Technology (IIT) Delhi have achieved a trusted-node-free quantum key distribution (QKD) up to 380 km in standard telecom fiber with a very low quantum bit error rate (QBER). According to the institution, this long secure length is the highest achieved so far, not only in India but first globally for the Differential Phase Shift (DPS) QKD protocol, keeping IIT Delhi at the forefront of research and development in quantum communication technologies
IIT-Delhi researchers achieve secure quantum communication for 380 km in standard telecom fiber
The Hindu | Published on Oct 5, 2023
“It paves ways for more secure long distance communication useful for strategic areas such as defence and online banking, making digital transactions safer in the near future.” IIT-Delhi researchers have achieved an experimental breakthrough on secure quantum communication up to a distance of 380 kilometres in standard telecom fiber with a very low error rate that can be helpful in securing financial transactions and secret codes.
IIT-Delhi Researchers Achieve Secure Quantum Communication For 380 Km In Standard Telecom Fiber
Jagran Prakashan | Published on Oct 5, 2023
IIT-Delhi Researchers' extended secure communication range is not only a national milestone but also a global one for the Differential Phase Shift (DPS) Quantum Key Distribution (QKD) protocol, marking a major breakthrough in quantum communication technology.Researchers at the Indian Institute of Technology (IIT) Delhi have successfully demonstrated secure quantum communication over a remarkable distance of 380 kilometers through standard telecom fiber, boasting an impressively low error
India enters the “Quantum Key Distribution” club
Janes | Published on Feb 28, 2022
India, for the first time, has demonstrated Quantum Key Distribution (QKD) links over a distance of more than 100 km, the Indian Ministry of Defence (MoD) has said. According to a media release by the MoD on 23 February, this QKD capability was demonstrated between the cities of Prayagraj and Vindhyachal, both in the northern state of Uttar Pradesh.
AIM Tv | Published Jun 18, 2025
India Successfully Tests Unhackable Quantum Communication | Front Page
India’s First Free-Space Quantum Encryption Breakthrough India has just made a monumental leap in cybersecurity! DRDO and IIT Delhi have successfully demonstrated free-space quantum communication using quantum entanglement over 1.2 km, without the need for fiber optics. This groundbreaking achievement paves the way for unhackable encryption, military-grade security, and the Quantum Internet. Key Highlights: Achieved 240 bits/sec key rate with 7% error rate, Using entangled photons for tamper-proof, real-time encryption, Key for quantum-secure military comms, satellite-to-ground encryption, and more.
Defense Minister Rajnath Singh calls it a "game-changer" for future warfare. Global Context: As quantum technology advances globally, India is establishing itself as a leader in quantum resilience, ensuring sovereign secure networks for the future. With quantum computing on the horizon, traditional encryption systems will be rendered obsolete — India's early investments in quantum communication ensure its digital and national security infrastructure remains safe. Future Roadmap:
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From 1.2 km on IIT Delhi’s campus to building national quantum networks
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Critical for defense, financial systems, and government communications
Watch Now to see the quantum revolution unfold and why India is not just participating in the global race but leading it!
DRDO, IIT-Delhi demonstrate free-space quantum secure communication over 1 km
The Hindu | Published on Jun 17, 2025
Considered a major breakthrough in the field of cybersecurity, the use of quantum entanglement is being described as a landmark achievement in the new quantum era of secure communication. DRDO and the Indian Institute of Technology Delhi (IIT-Delhi) successfully demonstrated Quantum Entanglement-based free-space Quantum Secure Communication over a 1 km range, marking a major breakthrough in quantum cybersecurity and secure communications, on June 16, 2025.
India enters quantum era with breakthrough in free-space secure communication
India Today | Published on Jun 17, 2025
The experiment attained a secure key rate of nearly 240 bits per second with a quantum bit error rate of less than 7 per cent. This entanglement-assisted quantum secure communication paves the way for real-time applications in quantum cybersecurity.
Indian Scientists Establish Secure Quantum Communication In Breakthrough Achievement
NDTV | Published on Jun 17, 2025
In a groundbreaking scientific achievement, Indian scientists have successfully demonstrated quantum entanglement-based free-space secure communication over a distance of more than one kilometre via an optical link. The development, made possible by the Defence Research and Development Organisation (DRDO)-Industry-Academia Centre of Excellence (DIA-CoE), IIT Delhi, has ushered in a new quantum era in the country.
Explained: India's 1-km quantum leap that makes eavesdropping impossible
Business Standard | Published on Jun 17, 2025
Remember Salman Khan in the movie Judwaa—double trouble, one reflex? The actor plays twin brothers mysteriously synced-up: punch one, the other flinches. That David Dhawan comedy, believe it or not, offers a fun primer on something that even baffled Einstein—quantum entanglement. Fast forward to today, the same concept is driving cutting-edge communication systems.
DRDO and IIT Delhi Demonstrate 1 km Free-Space Entanglement-Based Quantum Communication
Quantum Computing Report | Published on Jun 20, 2025
Researchers at IIT Delhi Achieve Trusted-node-free Secure Quantum Communication for 380 km in Standard Telecom Fiber
Indian Institute of Technology Delhi | Published on Oct 6, 2023
New Delhi: In a recent experimental breakthrough on secure quantum communication, researchers at IIT Delhi have achieved a trusted-node-free quantum key distribution (QKD) up to 380 km in standard telecom fiber with a very low quantum bit error rate (QBER).
This long secure length is the highest achieved so far, not only in India but first globally for the Differential Phase Shift (DPS) QKD protocol, keeping IIT Delhi at the forefront of research and development in quantum communication technologies. Such low QBER enables the DPS QKD scheme resistant to collective and individual attacks and implementable for various applications, such as securing financial transactions, medical records, and secret codes.