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arXiv 1802.04839quant-ph
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通过对驱动辅助量子比特的重复投影测量产生和稳定Bell态

Generation and stabilization of Bell states via repeated projective measurements on a driven ancilla qubit

L. Magazzù, J. D. Jaramillo, P. Talkner, P. Hänggi

摘要:

提出了一种在两个非直接相互作用的量子比特中产生Bell态的协议,该协议通过重复测量连接到两个量子比特的中心附属物的状态来实现。发现了最佳测量速率,其最小化在目标量子位中稳定编码Bell状态的时间,这是有利的,以便减少与环境的可能相互作用的有害影响。纠缠的质量是根据并发度来评估的,量子比特态和目标Bell态之间的距离是由保真度来量化的。

英文摘要:

A protocol is proposed to generate Bell states in two non-directly interacting qubits by means of repeated measurements of the state of a central ancilla connected to both qubits. An optimal measurement rate is found that minimizes the time to stably encode a Bell state in the target qubits, being of advantage in order to reduce detrimental effects from possible interactions with the environment. The quality of the entanglement is assessed in terms of the concurrence and the distance between the qubits state and the target Bell state is quantified by the fidelity.

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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