Deterministic secure quantum communication without unitary operation based on high-dimensional entanglement swapping |
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Authors: | LIU ZhiHao CHEN HanWu LIU WenJie XU Juan & LI ZhiQiang |
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Affiliation: | 1School of Computer Science and Engineering,Southeast University,Nanjing 211189,China;2School of Computer and Software,Nanjing University of Information Science & Technology,Nanjing 210044,China;3College of Information Engineering,Yangzhou University,Yangzhou 225009,China |
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Abstract: | By analysis of the basic properties of entanglement swapping of high-dimensional Bell states,a universal and general deterministic secure quantum communication(DSQC)protocol is proposed,in which unitary operation is not required.By making use of the results of high-dimensional Bell measurement,the sender and the receiver can encode and decode the message respectively by performing the modular addition and subtraction.Two mutually complementary bases are constructed;and according to the property of mutual complement,a method for checking security of the high-dimensional quantum channel is put forward.Some common attack strategies are analyzed,and the corresponding error rates are calculated.Then the upper bound of the threshold of error rate is deduced. |
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Keywords: | deterministic secure quantum communication high-dimensional Bell state entanglement swap-ping high-dimensional Bell measurement |
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