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arXiv 0908.4377quant-ph
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通过辅助量子比特的共振传输的重复提取纠缠

Extraction of an Entanglement by Repetition of the Resonant Transmission of an Ancilla Qubit

Kazuya Yuasa

摘要:

提出了一种提取两个非相互作用量子比特(自旋)纠缠的方案。这个想法是利用辅助量子比特通过两个固定量子比特的共振传输,由散射体中的纠缠控制。共振传输的重复从目标量子位的任意给定状态提取目标量子位中的单线态。与先前提出的方案相比,既不需要辅助自旋的准备也不需要辅助自旋的后选择。

英文摘要:

A scheme for the extraction of entanglement in two noninteracting qubits (spins) is proposed. The idea is to make use of resonant transmission of ancilla qubit through the two fixed qubits, controlled by the entanglement in the scatterers. Repetition of the resonant transmission extracts the singlet state in the target qubits from their arbitrary given state. Neither the preparation nor the post-selection of the ancilla spin is required, in contrast to the previously proposed schemes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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