Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Quantum cryptography on multi-user network architectures

Patrick D. Kumavor, Alan C. Beal, Susanne F. Yelin, Eric Donkor, Bing C. Wang

Published May 5, 2006• 1 citation
Publisher

Abstract

Quantum cryptography applies the uncertainty principle and the no-cloning theorem to allow to parties to share a secret key over an ultra-secure link. Present quantum cryptography technologies provide encryption key distribution only between two users. However, practical implementations of encryption key distribution schemes require establishing secure quantum communications amongst multiple users. This paper looks at some of the advantages and drawbacks of some common network topologies that could be used in sending cryptographic keys across a network consisting of multiple users. These topologies are the star, ring, and bus networks. Their performances are compared and analyzed using quantum bit error rate analysis. The paper also presents an experimental demonstration of a six-user quantum key distribution network implemented on a bus topology.

DOI
10.1117/12.665651

Related papers

Multi-user quantum cryptography

Bing C. Wang, Patrick D. Kumavor, Susanne F. Yelin +1 more

Quantum cryptography applies the uncertainty principle and the no-cloning theorem of quantum mechanics to provide ultra-secure encryption key distribution between two parties. Present quantum cryptography technologies provide encryption key distribution between two parties. However, practical implementations encryption key distribution schemes require establishing secure quantum communications amongst multiple users. In this talk, we survey some of the state of the art quantum encryption deployment in communication networks. We will also discuss some common topologies that are being considered for multi-user quantum encryption networks. The performance of the multi-user quantum key distribution systems is then compared for four different optical network topologies: the Sagnac-based fiber ring, the wavelength routed, the passive star and the bus network. Their performances are compared and analyzed using quantum bit error rate analysis.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Oct 23, 2005•0 citations

Performance analysis of different multi-user optical passive networks for quantum cryptography applications

P. Curtacci, Fabio Garzia, Roberto Cusani +1 more

The performance of four passive optical network topologies in implementing multi-user quantum key distribution is compared, using 3 protocols proposed by quantum cryptography (B92, EPR, SSP). The networks considered are the passive-star network, the optical-ring network based on the Sagnac interferometer, the wavelength-routed network, and the wavelength-addressed bus network . An analysis of the quantum bit-error rate and sifted key rate for each of these topologies is used to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determinated.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Apr 21, 2006•3 citations

S6-Technical Session VII: Applications ofFiber andInteirated Optical Communications Multi-User QuantumCryptography Networks

BingC . Wang

Present quantum cryptography technologies canprovide ultra-secure encryption keydistribution between twoparties. However, anypractical implementation ofencryption keydistribution schemes requires establishing secure quantum communications amongst multiple users. Inthis talk, wewill briefly survey someofthelatest quantum keydistribution research going oninbothindustrial andacademic research laboratories. Inaddition, recent efforts indeploying quantum cryptography technologies inthefield will be discussed. Wewill also discuss somecommontopologies that arebeing considered formulti-user quantum encryption networks. Theperformance ofthemulti-user quantum keydistribution systems isthen compared infour commonoptical network topologies: theSagnac-based fiber ring, thewavelength routed, thepassive star andthebusnetwork. Their performances areanalyzed andcompared using quantum bit error rate analysis BIOGRAPHY Professor BingC.Wangreceived theB.S.degree inapplied Physics fromColumbia University, New York, in1998-and thePh.D. degree inelectrical engineering fromPrinceton University, Princeton NJ,in 2002. While atPrinceton, heworked intheLightwave Communications Laboratory under theguidance of Professor PaulPrucnal, hisresearch advisor.

•Jan 1, 2005•0 citations

Comparison of four multi-user quantum key distribution schemes over passive optical networks

Patrick D. Kumavor, Lincey Cherian, Eric Donkor +2 more

The performance of multi-user quantum key distribution systems is compared for four different optical network topologies: Sagnac-based fiber ring, wavelength routed, passive star and bus. Their performances are analyzed using quantum bit error rate analysis.

Optical Fiber Communication Conference•Jan 1, 2004•1 citation

Comparison of 4 Multi-User Passive Network Topologies for 3 Different Quantum Key Distribution

Fabio Garzia, Roberto Cusani

The purpose of this paper is to compare the performance of four passive optical network topologies in implementing multi-user quantum key distribution, using 3 protocols proposed by quantum cryptography (B92, EPR, and SSP). The considered networks are the passive-star network, the optical-ring network based on the Signac interferometer, the wavelength-routed network, and the wavelength-addressed bus network. The quantum bit-error rate and sifted key rate for each of these topologies are analysed to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determined.

Communications and Network•Jan 1, 2010•0 citations

Comparison of four multi-user quantum key distribution schemes over passive optical networks

Patrick D. Kumavor, Alan C. Beal, Susanne F. Yelin +2 more

The performance of four passive optical network topologies in implementing multi-user quantum key distribution is compared. The networks considered are the passive-star network, the optical-ring network based on the Sagnac interferometer, the wavelength-routed network, and the wavelength-addressed bus network. An analysis of the quantum bit-error rate and sifted key rate for each of these topologies is used to determine their suitability for providing service to networks of various sizes.

Journal of Lightwave Technology•Jan 1, 2005•61 citations
Quantum cryptography applies the uncertainty principle and the no-cloning theorem to allow to parties to share a secret key over an ultra-secure link. Present quantum cryptography technologies provide encryption key distribution only between two users. However, practical implementations of encryption key distribution schemes require establishing secure quantum communications amongst multiple users. This paper looks at some of the advantages and drawbacks of some common network topologies that could be used in sending cryptographic keys across a network consisting of multiple users. These topologies are the star, ring, and bus networks. Their performances are compared and analyzed using quantum bit error rate analysis. The paper also presents an experimental demonstration of a six-user quantum key distribution network implemented on a bus topology.
Quantum cryptography applies the uncertainty principle and the no-cloning theorem of quantum mechanics to provide ultra-secure encryption key distribution between two parties. Present quantum cryptography technologies provide encryption key distribution between two parties. However, practical implementations encryption key distribution schemes require establishing secure quantum communications amongst multiple users. In this talk, we survey some of the state of the art quantum encryption deployment in communication networks. We will also discuss some common topologies that are being considered for multi-user quantum encryption networks. The performance of the multi-user quantum key distribution systems is then compared for four different optical network topologies: the Sagnac-based fiber ring, the wavelength routed, the passive star and the bus network. Their performances are compared and analyzed using quantum bit error rate analysis.
The performance of four passive optical network topologies in implementing multi-user quantum key distribution is compared, using 3 protocols proposed by quantum cryptography (B92, EPR, SSP). The networks considered are the passive-star network, the optical-ring network based on the Sagnac interferometer, the wavelength-routed network, and the wavelength-addressed bus network . An analysis of the quantum bit-error rate and sifted key rate for each of these topologies is used to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determinated.
Present quantum cryptography technologies canprovide ultra-secure encryption keydistribution between twoparties. However, anypractical implementation ofencryption keydistribution schemes requires establishing secure quantum communications amongst multiple users. Inthis talk, wewill briefly survey someofthelatest quantum keydistribution research going oninbothindustrial andacademic research laboratories. Inaddition, recent efforts indeploying quantum cryptography technologies inthefield will be discussed. Wewill also discuss somecommontopologies that arebeing considered formulti-user quantum encryption networks. Theperformance ofthemulti-user quantum keydistribution systems isthen compared infour commonoptical network topologies: theSagnac-based fiber ring, thewavelength routed, thepassive star andthebusnetwork. Their performances areanalyzed andcompared using quantum bit error rate analysis BIOGRAPHY Professor BingC.Wangreceived theB.S.degree inapplied Physics fromColumbia University, New York, in1998-and thePh.D. degree inelectrical engineering fromPrinceton University, Princeton NJ,in 2002. While atPrinceton, heworked intheLightwave Communications Laboratory under theguidance of Professor PaulPrucnal, hisresearch advisor.
The purpose of this paper is to compare the performance of four passive optical network topologies in implementing multi-user quantum key distribution, using 3 protocols proposed by quantum cryptography (B92, EPR, and SSP). The considered networks are the passive-star network, the optical-ring network based on the Signac interferometer, the wavelength-routed network, and the wavelength-addressed bus network. The quantum bit-error rate and sifted key rate for each of these topologies are analysed to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determined.