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Indian Space Research Organisation is India's national space agency. It serves as the principal research and development arm of the Department of Space (DoS), overseen by the Prime Minister of India, with the Chairman of ISRO also serving as the chief executive of the DoS. It is primarily responsible for space-based operations, space exploration, international space cooperation and the development of related technologies. The agency maintains a constellation of imaging, communication and remote sensing satellites. It operates the GAGAN and IRNSS satellite navigation systems. It has sent three missions to the Moon and one mission to Mars.
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GSAT-7 or INSAT-4F is a multi-band military communications satellite developed by the Indian Space Research Organisation. The Indian Navy is the user of the multi-band communication spacecraft, which has been operational since September 2013. According to defense experts, the satellite will enable the navy to extend its blue water capabilities and stop relying on foreign satellites like Inmarsat, which provide communication services to its ships.
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In quantum computing, quantum memory is the quantum-mechanical version of ordinary computer memory. Whereas ordinary memory stores information as binary states, quantum memory stores a quantum state for later retrieval. These states hold useful computational information known as qubits. Unlike the classical memory of everyday computers, the states stored in quantum memory can be in a quantum superposition, giving much more practical flexibility in quantum algorithms than classical information storage.
The Defence Space Agency (DSA) is an integrated tri-services agency of the Indian Armed Forces headquartered in Bengaluru, Karnataka, India. The agency is tasked with operating the space-warfare and Satellite Intelligence assets of India. The DSA draws personnel from all three branches of the Armed Forces.
BBM92 is a quantum key distribution without Bell's theorem developed using polarized entangled photon pairs by Charles H. Bennett, Gilles Brassard and N. David Mermin in 1992. It is named after the trio's surnames as. It uses decoy state of multiple photon instead of single. The key differences in E91 protocol and B92 uses only two states instead of four states used by E91 protocol and BB84
References
- ↑ Chethan Kumar (Mar 23, 2021). "Isro demonstrates quantum comm tech; to extend it to Sats next | India News - Times of India". The Times of India. Retrieved 2022-09-18.
- ↑ "Department of Space demonstrates entanglement based quantum communication over 300m free space along with real time cryptographic applications - ISRO". www.isro.gov.in. Archived from the original on 2022-02-01. Retrieved 2022-09-18.
- ↑ "Explained: Quantum Communication demonstrated by ISRO". www.jagranjosh.com. 2021-03-25. Retrieved 2022-09-18.
- ↑ "ISRO Quantum entangled".
- 1 2 "Isro conducts breakthrough demonstration of hack-proof quantum communication". India Today. February 1, 2022. Retrieved 2022-09-18.
- ↑ Bommakanti, Kartik. "Quantum communications: ISRO makes progress, but China is ahead". ORF. Retrieved 2022-09-18.
- ↑ "Quantum Communication By ISRO | Simplified UPSC". simplifiedupsc.in. 2022-02-06. Retrieved 2022-09-18.
- ↑ "ISRO achieves breakthrough in quantum communication, precursor for quantum satellite". The Economic Times . 22 March 2021. Retrieved 2022-09-18.
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