SAIL sharpens strategic priorities for FY27, reinforces market position (See 'Corp Brief') Railways sanctions upgradation of Electric Traction System on Bengaluru-Tumkur Section (See 'Corp Brief') IBC - Once resolution plan was approved by CoC, successful resolution applicant is bound by it and cannot seek to evade implementation by raising objections to LoI stipulations that are inherent in process: SC (See 'Legal Desk') Railways sanctions upgradation of Electric Traction System on Mahbubnagar-Secunderabad Section (See 'Corp Brief') Capital Market - Finding of 'fraud' under SEBI PFUTP Regulations, 2003, cannot be sustained, if Securities Appellate Tribunal had committed 'egregious error' in affirming SEBI's conclusions on manipulation & fraudulent intent: SC (See 'Legal Desk') IBC's Primacy Over the Electricity Act and the Extinguishment of Pre-CIRP Claims (See CORP EINSICHT) MoS inaugurates Self-ticketing Kiosks at National Zoological Park (See 'Corp Brief') Ministry of Panchayati Raj to organise outreach workshop on Atmanirbhar Panchayat Program (See 'Corp Brief') Mandaviya leads nationwide World Bicycle Day celebrations with actor Vikrant Massey (See 'Corp Brief') IPR - Nature of enquiry u/s 57, being one for cancellation or rectification of register, is founded upon appreciation of statutory parameters such as distinctiveness, prior use and likelihood of confusion: HC (See 'Legal Desk') MoS inaugurates Daycare Facility for Children of MSDE Employees at Kaushal Bhawan (See 'Corp Brief') National Biodiversity Authority Celebrates World Environment Day 2026 (See 'Corp Brief') AI-enabled Sayuj App & Open Challenge Program 1.0 launched to strengthen Startup Ecosystem: MoS (See 'Corp Brief') Over 6,000 youth from across country to celebrate innovation & leadership (See 'Corp Brief') IBC - Land leased by statutory authority cannot be excluded from Corporate Debtor's assets on ground that development rights were transferred without consent: NCLT (See 'Legal Desk') India Showcases Climate Progress at WTO Environment Week (See 'Corp Brief') IBC - Admission of claim by IRP/RP during CIRP does not amount to acknowledgment of liability u/s 18 of Limitation Act: SC (See 'Legal Desk')

Print

DRDO, IIT Delhi demonstrates various Quantum Communication Technologies

Published: Nov 27, 2024

By TIOLCorplaws News Service

NEW DELHI, NOV 27, 2024: THE DRDO Industry Academia-Centre of Excellence (DIA-CoE), IIT Delhi demonstrated quantum communications technologies in New Delhi today on November 26, 2024. It has been developed by their collaborative initiative of the entanglement based quantum key distribution approaches for robust and secure communication, demonstrating entanglement distribution and quantum key distribution (QKD) over a 50 km fiber link in laboratory. A separate field test has demonstrated entanglement distribution and QKD over 8 km of optical fiber in IIT Delhi campus.

In another initiative of quantum research, Free-space Entanglement distribution was demonstrated using the BBM-92 protocol, a key QKD method, between two tables separated by 20 meters in the lab and 80m in the open space. This experiment demonstrated short-range quantum communication in a free-space setup.

In an innovative experiment, Hybrid entanglement has been demonstrated in a free-space environment, achieving a Quantum Bit Error Rate (QBER) of around 6% in the laboratory over a distance of 10m in the lab. In addition, QKD systems supporting multiple independent channels driven by a single source are also being explored with promising results. These open the door for more flexible, multi-protocol quantum communication systems.

In achieving the above breakthrough, an all-fiber heralded photon source with second-order correlation function (g² ~ 0.01) at rates reaching hundreds of kHz is developed. This innovation is vital for single-photon generation, a critical requirement for secure quantum communication. An all-fiber entangled photon source has also been developed with high visibility. The Bell test parameter for this source is more than 2.6, exhibiting strong quantum entanglement, which is essential for protocols like BBM-92.

For free space quantum communication experiments, Free-space heralded single photon source has been demonstrated with a heralding rate of over 4 million counts/sec. This development enables robust free-space quantum communication.

Following India's First Quantum Key Distribution (QKD) demonstration between the cities of Prayagraj and Vindhyachal, separated by 100 km, by DRDO labs and IIT (D) in February 2022, many new initiatives have been taken by DRDO and IIT (D).

In addition, indigenisation of various components like quantum sources and detectors are initiated. These include single photon sources on LNOI, SNSPD and periodically poled non-linear crystals. These projects are launched at IIT Delhi in collaboration with DRDO labs like DYSL-QT and SSPL and are funded by Directorate of Futuristic Technology Management under its deep tech initiatives aimed at fostering cutting-edge innovations in defence technology.

Through its projects at the DIA-CoE, IITD, DRDO have created a strong national foot-print in QKD with breakthroughs in fibre and free space areas. Quantum communication holds significant potential for enhancing security in strategic sectors, such as defence and finance, by providing robust and tamper-evident communication channels.

The DRDO Industry Academia-Centre of Excellence (DIA-CoE) is a collaborative initiative between DRDO and IIT Delhi, established at IIT Delhi. The CoE is developing various quantum communication technologies like development of fibre and free-space (polarization/hybrid photon) based Quantum Key Distributions Technologies, Quantum Sources, Quantum Detectors and Non-linear Crystals.

TIOL CORP SEARCH

TIOL GROUP WEBSITES

taxindiaonline
taxindiainternational
tioltube
TKF
TIOLawards
A TIOL Website. Copyright © 2025 TIOLcorplaws.com All rights reserved.