Open Access
ARTICLE
New Quantum Private Comparison Using Hyperentangled GHZ State
Jerrel Gianni1, Zhiguo Qu2,*
1 College of International Students, Nanjing University of Information Science and Technology, Nanjing, 210044, China
2 School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing, 210044, China
* Corresponding Author: Zhiguo Qu. Email:
Journal of Quantum Computing 2021, 3(2), 45-54. https://doi.org/10.32604/jqc.2021.019675
Received 15 April 2021; Accepted 10 May 2021; Issue published 22 June 2021
Abstract
In this paper, we propose a new protocol designed for quantum private
comparison (QPC). This new protocol utilizes the hyperentanglement as the
quantum resource and introduces a semi-honest third party (TP) to achieve the
objective. This protocol’s quantum carrier is a hyperentangled three-photon GHZ
state in 2 degrees of freedom (DOF), which could have 64 combinations. The TP
can decide which combination to use based on the shared key information
provided from a quantum key distribution (QKD) protocol. By doing so, the
security of the protocol can be improved further. Decoy photon technology is also
used as another means of security and checks if the transmission in the quantum
channel is secure or not before sending the quantum carrier. The proposed protocol
is proved to be able to fend off various kinds of eavesdropping attacks. In addition,
the new QPC protocol also can compare secret inputs securely and efficiently.
Keywords
Cite This Article
J. Gianni and Z. Qu, "New quantum private comparison using hyperentangled ghz state,"
Journal of Quantum Computing, vol. 3, no.2, pp. 45–54, 2021.
Citations