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arXiv quant-ph/0307122quant-ph
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量子通信中纠缠量子态的实验实现

Experimental realization of entangled qutrits for quantum communication

R. T. Thew, A. Acin, H. Zbinden, N. Gisin

摘要:

我们在实验上实现了一种产生、控制和测量纠缠量子态的技术。该方案使用自发参量下转换光子和非平衡3臂光纤干涉仪,其方案类似于量子位的Franson干涉布置。结果表明,该源能够产生具有净态保真度的最大纠缠态,F = 0.985 $\pm$ 0.018。此外,对系统的控制揭示了高的净双光子干涉条纹可见度,V = 0.919 $\pm$ 0.026。这一切都是在电信波长上完成的,从而促进了长距离高维量子通信的发展。

英文摘要:

We have experimentally realized a technique to generate, control and measure entangled qutrits, 3-dimensional quantum systems. This scheme uses spontaneous parametric down converted photons and unbalanced 3-arm fiber optic interferometers in a scheme analogous to the Franson interferometric arrangement for qubits. The results reveal a source capable of generating maximally entangled states with a net state fidelity, F = 0.985 $\pm$ 0.018. Further the control over the system reveals a high, net, 2-photon interference fringe visibility, V = 0.919 $\pm$ 0.026. This has all been done at telecom wavelengths thus facilitating the advancement towards long distance higher dimensional quantum communication.

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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