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arXiv 1403.4397quant-ph
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利用色散工程频率转换实现相干时频施密特选模

Demonstration of coherent time-frequency Schmidt mode selection using dispersion-engineered frequency conversion

Benjamin Brecht, Andreas Eckstein, Raimund Ricken, Viktor Quiring, Hubertus Suche, Linda Sansoni, Christine Silberhorn

摘要:

超快量子态的时频施密特(TFS)模与高比特率集成量子通信网络具有天然的兼容性。因此,它们为实现高维量子光学提供了一个有吸引力的选择。在这里,我们提出了一种基于非线性光波导中色散工程超快频率转换的量子脉冲门,这是利用TFS模式潜力的关键因素。我们通过实验恢复了我们的设备的模态谱-时间结构,并证明了80%的单模操作保真度,这是有限的实验缺点。此外,在单光子水平下,量子脉冲门的转换效率为87.7%,信噪比为8.8。

英文摘要:

Time-frequency Schmidt (TFS) modes of ultrafast quantum states are naturally compatible with high bit-rate integrated quantum communication networks. Thus they offer an attractive alternative for the realization of high dimensional quantum optics. Here, we present a quantum pulse gate based on dispersion-engineered ultrafast frequency conversion in a nonlinear optical waveguide, which is a key element for harnessing the potential of TFS modes. We experimentally retrieve the modal spectral-temporal structure of our device and demonstrate a single-mode operation fidelity of 80\%, which is limited by experimental shortcomings. In addition, we retrieve a conversion efficiency of 87.7\% with a high signal-to-noise ratio of 8.8 when operating the quantum pulse gate at the single-photon level.

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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