期刊
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
卷 56, 期 10, 页码 3164-3174出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-017-3484-6
关键词
Delegating quantum computation; Quantum key agreement; Semi-quantum key agreement; Single photon detection
资金
- National Nature Science Foundation of China [61373131, 61502101, 61672290]
- Six Talent Peaks Project of Jiangsu Province [2015-XXRJ-013]
- Natural Science Foundation of Jiangsu Province [BK20140823, BK20171458]
- Natural science Foundation for colleges and universities of Jiangsu Province [16KJB520030]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
A multi-party semi-quantum key agreement (SQKA) protocol based on delegating quantum computation (DQC) model is proposed by taking Bell states as quantum resources. In the proposed protocol, the participants only need the ability of accessing quantum channel and preparing single photons {|0 >, |1 >, |+>, |->}, while the complicated quantum operations, such as the unitary operations and Bell measurement, will be delegated to the remote quantum center. Compared with previous quantum key agreement protocols, this client-server model is more feasible in the early days of the emergence of quantum computers. In order to prevent the attacks from outside eavesdroppers, inner participants and quantum center, two single photon sequences are randomly inserted into Bell states: the first sequence is used to perform the quantum channel detection, while the second is applied to disorder the positions of message qubits, which guarantees the security of the protocol.
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