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arXiv 1202.4028quant-ph
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可区分物质量子比特间光子介导纠缠的分析

Analysis of photon-mediated entanglement between distinguishable matter qubits

A. M. Dyckovsky, S. Olmschenk

摘要:

我们从理论上评估通过干涉和探测两个发射光子来建立可区分的物质量子比特之间的远程纠缠。纠缠操作的保真度分析作为从每个量子存储器发射的光子之间的时间和频率模式匹配的函数。通过一般分析,我们定义了时间和频率模式失配绝对幅度的限制,以保持纠缠保真度大于99%,双光子探测效率大于90%。我们将我们的分析应用于几个选定的量子存储器系统。结果表明,在每个系统中,使用目前的实验技术,可以实现高的量子效率,同时保持可接受的纠缠率。因此,有可能在可区分的量子存储器之间使用双光子介导的纠缠操作来建立量子通信和分布式量子计算的网络。

英文摘要:

We theoretically evaluate establishing remote entanglement between distinguishable matter qubits through interference and detection of two emitted photons. The fidelity of the entanglement operation is analyzed as a function of the temporal and frequency mode-matching between the photons emitted from each quantum memory. With a general analysis, we define limits on the absolute magnitudes of temporal and frequency mode-mismatches in order to maintain entanglement fidelities greater than 99% with two-photon detection efficiencies greater than 90%. We apply our analysis to several selected systems of quantum memories. Results indicate that high fidelities may be achieved in each system using current experimental techniques, while maintaining acceptable rates of entanglement. Thus, it might be possible to use two-photon-mediated entanglement operations between distinguishable quantum memories to establish a network for quantum communication and distributed quantum computation.

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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