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Enhancing remote state preparation via five-qubit cluster state in noisy environments

机译:在嘈杂环境中通过五个Qubit群集状态增强远程状态准备

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This study proposes a remote state preparation scheme using a five-qubit cluster state as the quantum channel. In this scheme, Alice can prepare an arbitrary two-qubit entangled state on Bob's side using only some local operations and classical communications. The scheme is first described in an ideal environment, and the corresponding quantum circuit is given. An investigation of the scheme in the amplitude-damping noise and collective-dephasing noise, and an analysis of their influence on the scheme are carried out by calculating the fidelity of the output state. Moreover, the study takes full advantage of the weak measurement and reversing measurement to enhance the fidelity in the amplitude-damping noise, and constructing a decoherence-free subspace to suppress the collective-dephasing noise. The findings indicate that the schemes can provide higher fidelity in the amplitude-damping noise and collective-dephasing noise.
机译:本研究提出了一种使用五个Qubit群集状态作为量子通道的远程状态准备方案。在该方案中,Alice可以仅使用一些本地操作和经典通信在Bob侧准备一个任意的双时纠缠状态。该方案首先在理想的环境中描述,并且给出了相应的量子电路。通过计算输出状态的保真度来执行对幅度阻尼噪声和集体去除噪声的方案的研究,以及对方案的影响。此外,该研究充分利用了弱测量和反转测量,以增强幅度阻尼噪声中的保真度,并构建无堵塞的子空间以抑制集体去除噪声。结果表明,该方案可以在幅度阻尼噪声和集体去噪声噪声中提供更高的保真度。

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