Abstract
We propose two quantum direct communication (QDC) protocols with user authentication. Users can identify each other by checking the correlation of Greenberger-Horne-Zeilinger (GHZ) states. Alice can directly send a secret message to Bob without any previously shared secret using the remaining GHZ states after authentication. Our second QDC protocol can be used even though there is no quantum link between Alice and Bob. The security of the transmitted message is guaranteed by properties of entanglement of GHZ states.
| Original language | English |
|---|---|
| Article number | 042305 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 73 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2006 Apr 14 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
Cite this
Quantum direct communication with authentication. / Lee, Hwayean; Lim, Jong In; Yang, Hyungjin.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 73, No. 4, 042305, 14.04.2006.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Quantum direct communication with authentication
AU - Lee, Hwayean
AU - Lim, Jong In
AU - Yang, Hyungjin
PY - 2006/4/14
Y1 - 2006/4/14
N2 - We propose two quantum direct communication (QDC) protocols with user authentication. Users can identify each other by checking the correlation of Greenberger-Horne-Zeilinger (GHZ) states. Alice can directly send a secret message to Bob without any previously shared secret using the remaining GHZ states after authentication. Our second QDC protocol can be used even though there is no quantum link between Alice and Bob. The security of the transmitted message is guaranteed by properties of entanglement of GHZ states.
AB - We propose two quantum direct communication (QDC) protocols with user authentication. Users can identify each other by checking the correlation of Greenberger-Horne-Zeilinger (GHZ) states. Alice can directly send a secret message to Bob without any previously shared secret using the remaining GHZ states after authentication. Our second QDC protocol can be used even though there is no quantum link between Alice and Bob. The security of the transmitted message is guaranteed by properties of entanglement of GHZ states.
UR - http://www.scopus.com/inward/record.url?scp=33645683967&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33645683967&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.73.042305
DO - 10.1103/PhysRevA.73.042305
M3 - Article
AN - SCOPUS:33645683967
VL - 73
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 4
M1 - 042305
ER -