A Novel Scheme for Bidirectional and Hybrid Quantum Information Transmission via a Seven-Qubit State
In this paper, we present a novel scheme for bidirectional and hybrid quantum information transmission via a seven-qubit state. We demonstrate that under the control of the supervisor two distant participants can simultaneously and deterministically exchange their states with each other no matter whether they know the states or not. In our scheme, Alice can teleport an arbitrary single-qubit state (two-qubit state) to Bob and Bob can prepare a known two-qubit state (single-qubit state) for Alice simultaneously via the control of the supervisor Charlie. Compared with previous studies for single bidirectional quantum teleportation or single bidirectional remote state preparation schemes, our protocol is a kind of hybrid approach for quantum information transmission. Furthermore, it achieves success with unit probability. Notably, since only pauli operations and two-qubit and single-qubit measurements are used in our schemes, it is flexible in physical experiments.
KeywordsAsymmetric bidirectional quantum information communication Quantum teleportation Remote state preparation Cryptography Seven-qubit entangled state
This work is supported by the National Natural Science Foundation of China (No. 61473199 and No. 61104002), Youth Fund Project of the Natural Science Foundation of Jiangsu Province (No.BK20140305), Project supported by JiangSu Provincial Key Laboratory for Computer Information Processing Technology, Soochow University, China (Grant No. KJS1128) and Key Lab of Cognitive Radio & Signal Processing, Guilin Univ. of Electronic Technology (No. 2013KF05).
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