NDLI: Random Numbers for Quantum Key Distribution

Content Provider	IEEE Xplore Digital Library
Author	Zbinden, H.
Copyright Year	2008
Description	Author affiliation: Group of Appl. Phys., Univ. of Geneva, Geneva, Switzerland (Zbinden, H.)
Abstract	Quantum key distribution (QKD) has seen an important development for the last ten years. Nowadays, different companies offer commercial solutions and key exchanges at pulse rates of up to 1 GHz and over distances of up to 200 km have been demonstrated in research labs. However, the generation of random bit strings has often been neglected and it remains a technical problem, as physical random number generators have still insufficient bit rates for high speed QKD. In this talk, after an introduction in QKD, a state of the art prototype developed at the University of Geneva was presented. This prototype allows generating keys at high rates over up to 200 km of optical fiber. However, due to the lack of high rate physical random generators, random bits at a rate of 350 MHz are produced by a pseudo random number generator seeded by random bits originating from a quantum random number generator (4 MHz, id Quantique). It was show how an eavesdropper could attack a QKD system based on pseudo random numbers. Finally, different possibilities to increase the rates of quantum random number generators was discussed.
Starting Page	19
Ending Page	19
File Size	127774
Page Count	1
File Format	PDF
ISBN	9780769535234
DOI	10.1109/SYNASC.2008.95
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-09-26
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fibers Quantum computing Scientific computing Bit rate Prototypes Random number generation Physics
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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