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 | |
| Publication status | Published - 2010 Jun 15 |
Fingerprint
Keywords
- Entanglement swapping
- Quantum communication
- Quantum Key Distribution
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
Cite this
N quantum channels are sufficient for Multi-user Quantum Key Distribution protocol between n users. / Hong, Chang Ho; Heo, Jin O.; Khym, Gyong Luck; Lim, Jong In; Hong, Suc Kyung; Yang, Hyung Jin.
In: Optics Communications, Vol. 283, No. 12, 15.06.2010, p. 2644-2646.Research output: Contribution to journal › Article
}
TY - JOUR
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, Jong In
AU - Hong, Suc Kyung
AU - Yang, Hyung Jin
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
KW - Quantum communication
KW - Quantum Key Distribution
UR - http://www.scopus.com/inward/record.url?scp=77950865977&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950865977&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2010.02.037
DO - 10.1016/j.optcom.2010.02.037
M3 - Article
AN - SCOPUS:77950865977
VL - 283
SP - 2644
EP - 2646
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
IS - 12
ER -