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Quantum Information Processing

Erschienen in:

01.09.2019

A universal protocol for controlled bidirectional quantum state transmission

verfasst von: Yi-Ru Sun, Nan Xiang, Zhao Dou, Gang Xu, Xiu-Bo Chen, Yi-Xian Yang

Erschienen in: Quantum Information Processing | Ausgabe 9/2019

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Abstract

In this paper, we propose a universal protocol for controlled bidirectional quantum state transmission. The bidirectional transmission of \( n_{1} \)- and \( n_{2} \)-qubit equatorial states can be realized by using the \( 2n_{1} + 2n_{2} + 1 \)-qubit entangled state as the quantum channel, where \( n_{1} ,n_{2} \) are arbitrary nonzero positive integers. First, the quantum channel is constructed by using Hadamard (H) and CNOT operations. Furthermore, after the protocol completed, the desired state can be obtained simultaneously, securely and determinately. Second, two examples are given. One is a symmetric protocol which can complete the bidirectional transmission of two-qubit equatorial state. The other is an asymmetric protocol, where Alice transmits a single-qubit equatorial state to Bob and Bob transmits a four-qubit equatorial state to Alice. To the best of our knowledge, it is the first time to realize the bidirectional transmission of arbitrary-qubit equatorial state. At last, we analyze the performance of the protocol. Some comparisons with other protocols are described.

Vorheriger Artikel Recovery from an eavesdropping attack on a qubit of a graph state

Nächster Artikel Modeling and simulation of practical quantum secure communication network

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Titel: A universal protocol for controlled bidirectional quantum state transmission
verfasst von: Yi-Ru Sun
Nan Xiang
Zhao Dou
Gang Xu
Xiu-Bo Chen
Yi-Xian Yang
Publikationsdatum: 01.09.2019
Verlag: Springer US
Erschienen in: Quantum Information Processing / Ausgabe 9/2019
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-019-2390-7

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