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A prototype quantum cryptography system

Thesis/Dissertation:

Abstract

In this work we have constructed a new secure quantum key distribution system based on the BB84 protocol. Many current state-of-the-art quantum cryptography systems encounter major problems concerning low bit rate, synchronization, and stabilization. Our quantum cryptography system utilizes only laser diodes and standard passive optical components, to enhance the stability and also to decrease the space requirements. The development of this demonstration for a practical quantum key distribution system is a consequence of our previous work on the quantum cryptographic system using optical fiber components for the transmitter and receiver. There we found that the optical fiber couplers should not be used due to the problems with space, stability and alignment. The goal of the synchronization is to use as little transmission capacities as possible. The experimental results of our quantum key distribution system show the feasibility of getting more than 90 % transmission capacities with the approaches developed in this work. Therefore it becomes feasible to securely establish a random key sequence at a rate of 1 to {approx} 5K bit/s by using our stable, compact, cheap, and user-friendly modules for quantum cryptography. (author)
Publication Date:
Jul 01, 1998
Product Type:
Thesis/Dissertation
Reference Number:
EDB-00:027273
Resource Relation:
Other Information: TH: Thesis (Dr. rer. nat.); Reference number: DG30878; PBD: Jul 1998
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; LASERS; OPTICAL FIBERS; QUANTUM MECHANICS; STABILITY; SYNCHRONIZATION
OSTI ID:
20030858
Research Organizations:
Univ. Innsbruck, Innsbruck (Austria)
Country of Origin:
Austria
Language:
English
Other Identifying Numbers:
TRN: AT9900484000172
Availability:
Available from Univ. Bibliothek Innsbruck, Innrain 50, 6010 Innsbruck (AT)
Submitting Site:
INIS
Size:
83 pages
Announcement Date:
Jun 05, 2000

Thesis/Dissertation:

Citation Formats

Surasak, Chiangga. A prototype quantum cryptography system. Austria: N. p., 1998. Web.
Surasak, Chiangga. A prototype quantum cryptography system. Austria.
Surasak, Chiangga. 1998. "A prototype quantum cryptography system." Austria.
@misc{etde_20030858,
title = {A prototype quantum cryptography system}
author = {Surasak, Chiangga}
abstractNote = {In this work we have constructed a new secure quantum key distribution system based on the BB84 protocol. Many current state-of-the-art quantum cryptography systems encounter major problems concerning low bit rate, synchronization, and stabilization. Our quantum cryptography system utilizes only laser diodes and standard passive optical components, to enhance the stability and also to decrease the space requirements. The development of this demonstration for a practical quantum key distribution system is a consequence of our previous work on the quantum cryptographic system using optical fiber components for the transmitter and receiver. There we found that the optical fiber couplers should not be used due to the problems with space, stability and alignment. The goal of the synchronization is to use as little transmission capacities as possible. The experimental results of our quantum key distribution system show the feasibility of getting more than 90 % transmission capacities with the approaches developed in this work. Therefore it becomes feasible to securely establish a random key sequence at a rate of 1 to {approx} 5K bit/s by using our stable, compact, cheap, and user-friendly modules for quantum cryptography. (author)}
place = {Austria}
year = {1998}
month = {Jul}
}