论文标题
使用元启发式算法在miR波长处的氯贝特锂的优化设计
Optimized design of the lithium niobate for spectrally-pure-state generation at MIR wavelengths using metaheuristic algorithm
论文作者
论文摘要
中红外（MIR）带中的量子光源在许多应用中起着重要作用，例如量子传感，量子成像和量子通信。但是，在miR带中仍然缺乏高质量的量子光源，例如频谱纯的单光子源。在这项工作中，我们使用元启发式算法介绍了在优化的圆锥形烯橙色晶体中的频谱固态的产生。特别是，我们采用粒子群优化算法来优化硝酸锂晶体晶状体的占用周期。通过我们的方法，在第三组速度匹配的条件下，光谱纯度可以从0.820提高到0.998，而波长可支撑范围从3.0 $ $ $ m至4.0 $ $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m $ m至3.7 $ $ m $ m $ m $ m $ m $ m $ m $ m。我们的工作为在miR波长带上开发量子光子技术铺平了道路。
Quantum light sources in the mid-infrared (MIR) band play an important role in many applications, such as quantum sensing, quantum imaging, and quantum communication. However, there is still a lack of high-quality quantum light sources in the MIR band, such as the spectrally pure single-photon source. In this work, we present the generation of spectrally-pure state in an optimized poled lithium niobate crystal using a metaheuristic algorithm. In particular, we adopt the particle swarm optimization algorithm to optimize the duty cycle of the poling period of the lithium niobate crystal. With our approach, the spectral purity can be improved from 0.820 to 0.998 under the third group-velocity-matched condition, and the wavelength-tunable range is from 3.0 $μ$m to 4.0 $μ$m for the degenerate case and 3.0 $μ$m to 3.7 $μ$m for the nondegenerate case. Our work paves the way for developing quantum photonic technologies at the MIR wavelength band.
