Sun Yi-Ru, Chen Xiu-Bo, Xu Gang, Yuan Kai-Guo, Yang Yi-Xian
Information Security Center, State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
GuiZhou University, State Key Laboratory of Public Big Data, Guizhou, Guiyang, 550025, China.
Sci Rep. 2019 Feb 14;9(1):2081. doi: 10.1038/s41598-018-37957-x.
In this paper, a novel asymmetric controlled bidirectional remote preparation scheme is proposed. In our scheme, Alice and Bob are not only the senders but also the receivers with the control of Charlie. By using the eleven-qubit entangled state as the quantum channel, Alice prepares an arbitrary two-qubit equatorial state for Bob and Bob prepares an arbitrary three-qubit equatorial state for Alice simultaneously. Firstly, we give the construction process of the quantum channel. Secondly, the whole recovery operations are given. Alice and Bob can recover the prepared state determinately. Thirdly, we consider the effect of the noisy environment (amplitude-damping and phase-damping) in our scheme and calculate the fidelities of the output states. Finally, since our scheme does not need additional operations and auxiliary qubits, the efficiency of our scheme is higher than that of the previous schemes.
本文提出了一种新颖的非对称受控双向远程制备方案。在我们的方案中，爱丽丝和鲍勃不仅是发送方，而且在查理的控制下也是接收方。通过使用十一比特纠缠态作为量子信道，爱丽丝为鲍勃制备任意两比特赤道态，同时鲍勃为爱丽丝制备任意三比特赤道态。首先，我们给出量子信道的构建过程。其次，给出整个恢复操作。爱丽丝和鲍勃可以确定地恢复制备好的态。第三，我们考虑方案中噪声环境（幅度衰减和相位衰减）的影响，并计算输出态的保真度。最后，由于我们的方案不需要额外的操作和辅助量子比特，我们方案的效率高于先前的方案。
