Front Cover: Optimized Design of the Lithium Niobate for Spectrally‐Pure‐State Generation at MIR Wavelengths Using Metaheuristic Algorithm (Adv. Quantum Technol. 7/2022). Issue 7 (12th July 2022) - Cai, Wu‐Hao
Abstract : In article number 2200028, Wu‐Hao Cai, Ying Tian, Rui‐Bo Jin, and colleagues exploit the particle swarm optimization algorithm to design lithium niobate for generating spectrally‐pure single photons at mid‐infrared wavelengths. The authors report that the designed source has a high spectral purity and a wide tunable range. This technique will play as a practical tailoring tool in the crystal structure design and can be utilized for designing special nonlinear crystals to generate exotic quantum states for quantum sensing and metrology. This work has important implications for future applications in quantum information in the mid‐infrared wavelength. [Cover image created by Wu‐Hao Cai].