Toward 1% single-photon anharmonicity with periodically poled lithium niobate microring resonators
Toward 1% single-photon anharmonicity with periodically poled lithium niobate microring resonators
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DOI：
10.1364/optica.403931
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发表时间：
2020-12-20
期刊：
影响因子：
10.4
通讯作者：
Tang, Hong X.
中科院分区：
文献类型：
--
作者：
Lu, Juanjuan;Li, Ming;Tang, Hong X.
单光子非线性的缺乏一直是发展光频量子光子电路的主要障碍。在本文中，我们展示了一个周期性极化薄膜锂酸盐微谐振器（PPLNMR），达到5,000,000%/W的二次谐波转换效率-几乎20倍的国家的最先进的增强-通过访问其最大的chi（（2））张量分量d（33）通过准相位匹配。相应的单光子耦合率g/2 π估计为1.2 MHz，这是一个重要的里程碑，因为它接近社区中开发的最好的锂酸盐微谐振器的耗散率kappa/2 π。使用定义为g/kappa的品质因数，我们的设备达到了接近1%的单光子非线性非谐性。我们表明，通过进一步缩放的设备，它是可能的，以改善单光子非谐性的制度，光子阻塞效应可以体现。(C)根据OSA开放获取出版协议的条款，2020年美国光学学会
The absence of the single-photon nonlinearity has been a major roadblock in developing quantum photonic circuits at optical frequencies. In this paper, we demonstrate a periodically poled thin film lithium niobate microring resonator (PPLNMR) that reaches 5,000,000%/W second-harmonic conversion efficiency-almost 20-fold enhancement over the state-of-the-art-by accessing its largest chi((2)) tensor component d(33) via quasi-phase matching. The corresponding single-photon coupling rate g/2 pi is estimated to be 1.2 MHz, which is an important milestone as it approaches the dissipation rate kappa/2 pi of best-available lithium niobate microresonators developed in the community. Using a figure of merit defined as g/kappa, our device reaches a single-photon nonlinear anharmonicity approaching 1%. We show that, by further scaling of the device, it is possible to improve the single-photon anharmonicity to a regime where photon blockade effect can be manifested. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement