N quantum channels are sufficient for Multi-user Quantum Key Distribution protocol between n users

Chang Ho Hong; Jin O. Heo; Gyong Luck Khym; Jongin Lim; Suc Kyung Hong; Hyung Jin Yang

doi:10.1016/j.optcom.2010.02.037

N quantum channels are sufficient for Multi-user Quantum Key Distribution protocol between n users

Chang Ho Hong, Jin O. Heo, Gyong Luck Khym, Jongin Lim, Suc Kyung Hong, Hyung Jin Yang

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Quantum Key Distribution (QKD) protocols enable two parties to communicate in a secret manner. As it is necessary that there be a quantum channel between two users, n (n - 1) / 2 quantum channels are required for a QKD system of n users. We here propose a Multi-user Quantum Key Distribution protocol that utilizes entanglement swapping and by which only n quantum channels are needed for a communication system of n users. Any two among n users of the system can communicate with each other, even though there is no direct quantum channel between them. This is possible because entanglement swapping entangles the quantum states of the two users, establishing a quantum connection between them. Hence n quantum channels are sufficient for communication between n users. Furthermore, Trent, who performs entanglement swapping, has no way to fraudulently intervene in or eavesdrop on the communication between two users.

Original language	English
Pages (from-to)	2644-2646
Number of pages	3
Journal	Optics Communications
Volume	283
Issue number	12
DOIs	https://doi.org/10.1016/j.optcom.2010.02.037
Publication status	Published - 2010 Jun 15

Bibliographical note

Funding Information:
This research was supported by the MIC (Ministry of Information and Communication) , Korea, under the ITRC (Information Technology Research Center) support program supervised by the IITA (Institute of Information Technology Advancement) (IITA-2006-(C1090-0603-0025)) and the research foundation of Korea University , Grant No. K0717511 .

Keywords

Entanglement swapping
Quantum Key Distribution
Quantum communication

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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10.1016/j.optcom.2010.02.037

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title = "N quantum channels are sufficient for Multi-user Quantum Key Distribution protocol between n users",

abstract = "Quantum Key Distribution (QKD) protocols enable two parties to communicate in a secret manner. As it is necessary that there be a quantum channel between two users, n (n - 1) / 2 quantum channels are required for a QKD system of n users. We here propose a Multi-user Quantum Key Distribution protocol that utilizes entanglement swapping and by which only n quantum channels are needed for a communication system of n users. Any two among n users of the system can communicate with each other, even though there is no direct quantum channel between them. This is possible because entanglement swapping entangles the quantum states of the two users, establishing a quantum connection between them. Hence n quantum channels are sufficient for communication between n users. Furthermore, Trent, who performs entanglement swapping, has no way to fraudulently intervene in or eavesdrop on the communication between two users.",

keywords = "Entanglement swapping, Quantum Key Distribution, Quantum communication",

author = "Hong, {Chang Ho} and Heo, {Jin O.} and Khym, {Gyong Luck} and Jongin Lim and Hong, {Suc Kyung} and Yang, {Hyung Jin}",

note = "Funding Information: This research was supported by the MIC (Ministry of Information and Communication) , Korea, under the ITRC (Information Technology Research Center) support program supervised by the IITA (Institute of Information Technology Advancement) (IITA-2006-(C1090-0603-0025)) and the research foundation of Korea University , Grant No. K0717511 . ",

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doi = "10.1016/j.optcom.2010.02.037",

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T1 - N quantum channels are sufficient for Multi-user Quantum Key Distribution protocol between n users

AU - Hong, Chang Ho

AU - Heo, Jin O.

AU - Khym, Gyong Luck

AU - Lim, Jongin

AU - Hong, Suc Kyung

AU - Yang, Hyung Jin

N1 - Funding Information: This research was supported by the MIC (Ministry of Information and Communication) , Korea, under the ITRC (Information Technology Research Center) support program supervised by the IITA (Institute of Information Technology Advancement) (IITA-2006-(C1090-0603-0025)) and the research foundation of Korea University , Grant No. K0717511 .

PY - 2010/6/15

Y1 - 2010/6/15

N2 - Quantum Key Distribution (QKD) protocols enable two parties to communicate in a secret manner. As it is necessary that there be a quantum channel between two users, n (n - 1) / 2 quantum channels are required for a QKD system of n users. We here propose a Multi-user Quantum Key Distribution protocol that utilizes entanglement swapping and by which only n quantum channels are needed for a communication system of n users. Any two among n users of the system can communicate with each other, even though there is no direct quantum channel between them. This is possible because entanglement swapping entangles the quantum states of the two users, establishing a quantum connection between them. Hence n quantum channels are sufficient for communication between n users. Furthermore, Trent, who performs entanglement swapping, has no way to fraudulently intervene in or eavesdrop on the communication between two users.

AB - Quantum Key Distribution (QKD) protocols enable two parties to communicate in a secret manner. As it is necessary that there be a quantum channel between two users, n (n - 1) / 2 quantum channels are required for a QKD system of n users. We here propose a Multi-user Quantum Key Distribution protocol that utilizes entanglement swapping and by which only n quantum channels are needed for a communication system of n users. Any two among n users of the system can communicate with each other, even though there is no direct quantum channel between them. This is possible because entanglement swapping entangles the quantum states of the two users, establishing a quantum connection between them. Hence n quantum channels are sufficient for communication between n users. Furthermore, Trent, who performs entanglement swapping, has no way to fraudulently intervene in or eavesdrop on the communication between two users.

KW - Entanglement swapping

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KW - Quantum communication

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JO - Optics Communications

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N quantum channels are sufficient for Multi-user Quantum Key Distribution protocol between n users

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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